Locking Pliers

A locking plier is the tool you hope you never need and absolutely require on the day something goes badly wrong. A snapped seatpost binder bolt with the head broken off flush; a stripped quick-release skewer that won't turn; a seized rear-derailleur stop screw that has resisted every reasonable approach. Locking pliers clamp on, lock in place, and let you apply rotational force where nothing else can get a hold.

What it does well

The clamp-and-walk-away design is the whole point. Adjust the rear knob to set the closed-jaw width, squeeze the handle to lock the jaws closed at that width, and the tool holds itself in position without needing your grip. That means you can apply rotational force using a wrench against the plier body, or use both hands to crank against the locked plier handle.

The 250 mm length gives leverage. The drop-forged jaws are heat-treated for life; the jaw geometry is sharp enough to bite a fastener that other pliers have already cammed off. Nickel plating is the corrosion resistance you want for a tool that lives in the back of the drawer waiting for the bad day.

Where it earns its space in the bike shop

• Snapped bolt extraction. Clamp the protruding bolt shaft and turn.
• Stripped quick-release skewer nuts. Lock the plier on the nut flats and counter the lever shaft.
• Seized derailleur stop screws. Clamp the screw head when a screwdriver tip has rounded the slot.
• Stuck pedal-axle nuts past the box-joint's bite. Last-resort grip on already-damaged flats.

Honest framing

If you reach for locking pliers often, something upstream of this job is wrong. A 6 mm hex that's been stripped almost always means the hex key was undersized, missing a ball-end where you needed straight, or the bolt was over-torqued in the first place. A snapped bolt usually means thread prep was skipped and corrosion seized the threads. Use locking pliers when you have to; treat their use as a signal to revisit the procedure that led there.

Specs

• Length: 250 mm
• Construction: drop-forged jaws, heat-treated
• Finish: nickel-plated for corrosion resistance
• Maximum grip capacity: 35 mm
• Locking mechanism: rear-knob adjustable, handle-locked closed

Made in Slovenia, since 1919

Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The nickel plating is the finish choice for a tool that sits in storage between uses; the forging-and-heat-treatment is the metallurgy choice for the day the tool finally gets called on. A locking plier is judged not on its everyday performance but on what it does the one time it's needed.

Pro tip from our mechanics

The day this plier earns its space is the day you'll be glad you bought a forged one rather than a stamped one. The rest of the plier family does its work without the drama: Pliers for bike work →.