The Uditer Board Blog

You're three miles from home, cruising at a good clip, when you feel it — your front truck is loose. Every carve feels wobbly now. You pull over, check your pockets, and realize you don't have a tool. So you either ride back carefully, hoping the nut doesn't spin off entirely, or you walk. Neither option is fun.

That's the scenario a skate tool prevents. A skate tool (sometimes called a T-tool or Y-tool) is a compact, all-in-one wrench made specifically for skateboard hardware. It fits the three nut sizes on your board, has a screwdriver built in, and fits in your pocket or bag. Whether you ride a regular skateboard or an electric one, this one tool handles most of the adjustments and fixes you'll ever need on the side of the road.

Here's what each part does, how to use it, and what electric skateboard riders should know that regular guides don't cover.

What Is a Skate Tool? 

A skate tool is a multi-wrench designed for skateboard hardware. Instead of carrying three separate sockets and a screwdriver, you get everything in one piece.

The three sockets are always the same sizes because skateboard hardware is standardized:

Why three sizes? Skateboard trucks have been built to the same standard for decades. The 3/8" hardware nut, the 1/2" axle nut, and the 9/16" kingpin nut appear on virtually every skateboard and longboard, electric or not. A skate tool matches those sizes exactly.

Most skate tools also have a removable crossbar that doubles as a screwdriver. One end is a Phillips #2 (the cross-head), and the other is an Allen key (hex head). Some hardware uses Phillips screws, some uses Allen — your tool handles both.

Why not just use a regular wrench from your garage? You can, technically. But standard wrench sets often don't have the exact 3/8", 1/2", and 9/16" sizes, and a slightly loose fit will strip the nut. Skate tools are made to match those sizes exactly, every time. A stripped kingpin nut is a headache you don't need.

UDITER rider tip: If you ride a UDITER S3, you already have one — every S3 ships with a T-tool in the box, along with the charger and remote.

T-Tool vs Y-Tool — Which One Do You Need? 

There are two common shapes. Here's how they compare:

The T-tool is the standard. It's what most people carry. The Y-tool is for people who are constantly tearing down and rebuilding setups, or who do a lot of grinds and need the built-in rethreader to fix damaged axle threads.

Which should you get? If you're not sure, get the T-tool. You can always upgrade later.

Skate Tool Sizes Explained 

If you're new to this, the three socket sizes can feel random. They're not — each one matches a specific nut on your board. Here's the breakdown.

3/8" socket — Hardware nuts

These are the nuts that hold your trucks to the deck. There are eight of them (four per truck). You use the 3/8" socket on the nut side and the Phillips or Allen screwdriver on the top side (through the grip tape).

When you'd use it: swapping grip tape, mounting new trucks, adding riser pads between the deck and trucks, or just tightening hardware that's rattled loose.

1/2" socket — Axle nuts

These are the nuts at the ends of each truck axle, holding the wheels on. Two per truck, four total.

When you'd use it: replacing wheels, swapping or cleaning bearings, or adjusting how tight the wheels sit on the axle.

One thing to watch: don't overtighten axle nuts. If you crank them down too hard, you'll squeeze the bearings and the wheel won't spin freely. The wheel should spin smoothly with no grinding, and you should feel a tiny bit of side-to-side play. That's normal.

9/16" socket — Kingpin nut

The kingpin is the large bolt running through the center of each truck. The nut at the top controls how loose or tight your trucks feel.

When you'd use it: adjusting your truck tension. This is the adjustment you'll make most often.

• Clockwise (tighten) = stiffer trucks, more stability, harder to turn
• Counter-clockwise (loosen) = looser trucks, easier to carve and turn, less stable at speed

The trick is to make small adjustments. A quarter turn at a time. Then step on the board and lean side to side. Repeat until it feels right. There's no "correct" tightness — it's personal preference. Street skaters tend to run looser trucks for quick turns. Cruisers and commuters often prefer them a bit tighter for stability.

Phillips and Allen screwdriver

The removable crossbar pulls out of the T-tool. One end is a Phillips #2 head, the other is an Allen/hex key. You use the Phillips or Allen on the screw heads (top side of the deck, through the grip tape) while holding the 3/8" nut steady on the bottom. Most skateboard hardware uses Phillips, but some brands use Allen bolts instead.

What about the rethreader?

Some Y-tools (and a few high-end T-tools) include a 5/16" rethreading die. This is a small threaded hole that cleans up damaged axle threads. If you do a lot of grinds and your axle threads get bent or stripped, you screw the rethreader onto the axle to cut clean threads back into the metal. Most riders don't need one. If you're doing truckstands, darkslides, or any grind that hits the axle directly, it's worth having.

How to Use a Skate Tool — Step by Step 

Adjusting your trucks

1. Find the kingpin nut — it's the big nut in the center of each truck, pointing up toward the deck.
2. Fit the 9/16" socket onto it.
3. Turn clockwise to tighten (stiffer feel) or counter-clockwise to loosen (more carve).
4. Go a quarter turn at a time. Step on the board and test.
5. Repeat on the back truck.

Both trucks don't have to match. Some riders like the front truck slightly looser for quick steering and the back truck tighter for stability. Try different combos and see what works.

Changing your wheels

1. Use the 1/2" socket to remove the axle nut on one wheel.
2. Slide the wheel off the axle. Pay attention to the speed washers (the thin metal washers on each side of the wheel) — set them aside and don't lose them.
3. If you're swapping bearings too, pry them out of the old wheel and press them into the new one.
4. Slide the new wheel onto the axle, then put the speed washers back in place.
5. Thread the axle nut back on by hand, then give it a light snug with the 1/2" socket. Don't overtighten.

For electric skateboards with hub motors (like the UDITER S3), the process is the same for the non-motor wheels. The hub motor wheels come as a unit — motor, urethane sleeve, and bearings all together — so you don't swap bearings separately. If a hub motor wheel needs replacing, you remove the axle nut, disconnect the motor cable, and swap the whole assembly.

Swapping your battery (electric skateboard)

If your electric skateboard has a quick-swap battery system, a skate tool isn't required for the swap itself — the battery slides in and out without tools. On the UDITER S3, you pull the release tab, slide the old battery out, and slide a new one in. Takes about five seconds. But if you ever need to access the battery compartment screws or tighten the battery door hardware, the 3/8" socket and Phillips screwdriver on your T-tool handle that.

Tightening loose hardware

1. Flip the board over or tip it on its side.
2. Use the 3/8" socket to hold the nut steady on the bottom.
3. Use the Phillips or Allen screwdriver (from the crossbar) on the top screw.
4. Tighten in a criss-cross pattern — don't go around in a circle. Do one, then the one diagonally across from it. This keeps the truck sitting evenly on the deck.
5. Check all eight. A loose hardware bolt will rattle, and that sound means it's working its way out.

What Electric Skateboard Riders Need That's Different 

Most skate tool guides assume you're riding a regular skateboard. If you're on an electric skateboard, the basic tool needs are the same — you still adjust trucks, tighten hardware, and change wheels. But there are a few extras that regular guides never mention.

Hub motor boards (like UDITER S3)

The standard T-tool handles most of what you need: axle nuts, hardware, kingpin adjustment. But a few things to know:

• Hub motor wheels are heavier than regular wheels, so axle nuts can work loose faster from the extra vibration. Check them more often.
• If you ever need to remove a hub motor wheel for service, you'll need a small Allen key (usually 2mm–3mm) to disconnect the motor cable connector from the ESC. The T-tool's built-in Allen key is too large for this. Keep a 2mm and 3mm Allen key in your bag.
• The battery compartment on most hub motor boards uses standard Phillips or 3/8" hardware — your T-tool covers that.

Belt drive boards

If your electric skateboard uses belt drive instead of hub motors, you have a few extra tool needs:

• You'll need an Allen key (usually 3mm or 4mm) to remove the belt cover.
• Some brands use Torx screws (T25 is common) for the motor mount — a standard skate tool won't fit those.
• Belt tension adjustment usually requires an Allen key as well.

Extra tools worth carrying for electric skateboards

You don't need to carry all of this every ride. But if you're going on a long session or a trip, throw the Allen key set and a couple zip ties in your bag. It takes up almost no space and can save your session.

5 Things That Happen When You Don't Carry a Skate Tool

1. Your trucks go loose and you can't fix them. A loose truck at speed is dangerous. You get speed wobbles, overcorrect, and eat pavement. With a tool, you pull over, give the kingpin nut a quarter turn, and you're back rolling in ten seconds.

2. You get wheel bite and can't adjust. If your trucks are too loose and your wheels hit the deck on a hard turn (wheel bite), you need to tighten the kingpin. No tool means no adjustment, and wheel bite can stop your board dead mid-turn.

3. Hardware rattles off. The eight nuts holding your trucks to the deck vibrate loose over time. Without a tool, you can't retighten them. A missing hardware bolt means your truck can shift on the deck, which changes how the board rides and can be unsafe.

4. You can't help anyone else. Skaters help each other out. If someone at the park has a loose truck or a rattling wheel and you're the one with a tool, you're the hero. If you don't have one, you just shrug.

5. You can't do any maintenance on the spot. Flat spot on a wheel? Bearing sounding rough? Battery door rattling? All fixable in two minutes with a tool. Without one, you're riding something that's not right and hoping it holds together.

How to Choose the Right Skate Tool for You 

What to look for when buying:

• Full metal construction over plastic. Plastic-handled tools crack when you apply force to a stuck nut. Metal doesn't.
• Removable crossbar. If the screwdriver bit is fixed, you can't replace it when it wears down. Removable means replaceable.
• Ratchet mechanism (optional). A ratchet lets you tighten without lifting and repositioning the socket every turn. Saves time on hardware changes. Costs a few dollars more.
• Socket fit. The sockets should fit snugly on 3/8", 1/2", and 9/16" nuts with no wiggle. If they're loose, you'll strip hardware.

Price guide: A basic T-tool starts around $5. A good metal one with a ratchet runs $10–$15. The fanciest Y-tools with rethreaders top out around $20–$25. For most people, a $10–$12 metal T-tool is all you'll ever need.

Skate Tool Maintenance Tips 

A skate tool is simple and doesn't need much care, but a few habits will keep it working:

• Keep it dry. Metal tools rust. If your tool gets wet, wipe it off. Don't leave it in a wet bag.
• Check that the sockets aren't spreading. Cheaper tools can widen over time, especially the 1/2" socket. If it starts slipping on axle nuts, it's time for a new one.
• Replace the screwdriver when it strips. The Phillips head wears down after a lot of use. If it starts camming out (slipping out of the screw head), replace the crossbar or the whole tool.
• Don't use it as a hammer. Smacking things with your T-tool feels convenient in the moment, but it damages the sockets and bends the tool out of alignment.
• Keep it with your spare hardware. A small bag with your T-tool, a few extra nuts and bolts, and a couple of Allen keys covers almost anything that can go wrong during a session.

Frequently Asked Questions 

Do I really need a skate tool?

If your board has nuts and bolts on it — and it does — you need a way to tighten them. A skate tool is sized exactly for skateboard hardware. Using a random wrench that's close enough will strip the nut, and once that happens, you're cutting it off or drilling it out. A basic T-tool costs less than a sandwich. Just get one.

Can I use a regular wrench instead?

You can, but it's not a good idea. Standard wrench sets often skip the 3/8" size, and even if you find one that's close, a loose fit damages the nut. Skateboard nuts are soft metal. A 9/16" wrench that's 0.5mm off will round off the corners of the kingpin nut, and then you'll need pliers or a vice grip to get it off. A skate tool matches the sizes exactly. It's worth the five bucks.

What size socket fits skateboard wheels?

The 1/2" socket fits axle nuts (the ones holding the wheels on). The 3/8" socket fits hardware nuts (trucks to deck). The 9/16" socket fits the kingpin nut (truck tension). All three sizes are standard across virtually all skateboard trucks.

Does a skate tool work on electric skateboards?

The basics — adjusting trucks, tightening hardware, changing non-motor wheels — are the same for electric skateboards and work with a standard skate tool. The difference is that electric skateboards have additional components (motors, batteries, ESC) that may require Allen keys or Torx bits that a skate tool doesn't include. If you ride an electric skateboard, carry a small Allen key set (2mm, 3mm, 4mm) alongside your T-tool.

T-tool or Y-tool — which is better?

For most riders, the T-tool is the better choice. It's more compact, fits in your pocket, and handles all the standard adjustments. The Y-tool is worth considering if you do a lot of grinds (it has a built-in rethreader for damaged axle threads) or if you frequently build and rebuild setups and want the extra durability. If you're not sure, start with the T-tool.

How often should I check my hardware?

Quick check before every session: grab each truck and try to wiggle it. If it moves, something's loose. Give the kingpin nut a squeeze — if it spins easily by hand, it's too loose. Full hardware check every two weeks or so: go over all eight deck nuts, both kingpin nuts, and all four axle nuts. It takes about two minutes with a tool and prevents 90% of roadside issues.

What's a rethreading tool, and do I need one?

A rethreading tool (or rethreader) is a 5/16" die that cleans up damaged threads on your truck axle. If you do grinds that hit the axle — like truckstands, 50-50s on rough ledges, or any trick where the axle scrapes concrete — the threads can get bent or stripped. The rethreader screws onto the axle and cuts clean threads back into the metal, so your axle nut goes on smoothly again. If you mostly cruise and commute, you probably don't need one. If you do street skating with a lot of grinds, it's a cheap insurance policy.

Does the UDITER S3 come with a skate tool?

Yes. Every UDITER S3 ships with a T-tool in the box, along with the charger, remote, and user manual. You don't need to buy one separately — it's ready to go when the board arrives.

Found this helpful? Share it with a friend who rides. And if you're running an UDITER S3, check our dual battery guide for more maintenance tips.