9-piece Hex Wrench Set

A long-handle hex wrench set is the foundation of every bike shop's fastener-driver collection. The long arm gives leverage you need on stuck pedals, crank bolts, and over-torqued seatpost binders; the nine-size range from 1.5 to 10 mm covers every metric-hex fastener you'll see on a modern bicycle. This set arrives in a plastic clip-index that keeps the sizes in order; every wrench has its slot.

What's in the set

Nine metric hex wrenches with flat-end tips:

• 1.5 mm
• 2 mm
• 2.5 mm
• 3 mm
• 4 mm
• 5 mm
• 6 mm
• 8 mm
• 10 mm

The 4 and 5 mm sizes will see the most action; the 8 and 10 mm are the pedal-and-crank-bolt sizes. The 1.5 and 2.5 mm cover the small accessory fasteners that show up around shifters, brake levers, and computer mounts.

When to choose long-arm over short-arm

The long-arm form is the right default for a workshop. The advantages:

• More leverage for breaking stuck fasteners loose.
• More reach for fasteners on the inside of frames, behind component clusters, or in deep recesses.
• Better lever arm for the final cycle counts when a fastener is approaching install torque.

The trade-off is that long-arm wrenches don't fit into tight clearance scenarios (a bolt sandwiched between a derailleur cage and a chainstay, for example). Those cases want a short-arm set, which is a complementary purchase rather than a replacement.

Flat-end vs. ball-end

This set uses flat-end (straight-cut) tips on both arms. Flat tips deliver maximum torque capacity because the full face of the tip engages the bolt recess; ball-end tips trade torque capacity for the ability to engage at an angle.

For final-torque work and breaking stuck fasteners, flat-end is the right choice. For reaching fasteners that are partially blocked by adjacent components, the ball-end version of this set is the complementary tool. Many shops own both sets; the ball-end gets used for initial engagement, the flat-end for the final torque.

Specs

• Sizes: 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10 mm
• Tip style: flat-end (straight-cut)
• Handle style: long-arm L-shape
• Storage: plastic clip-index
• Dimensional standard: DIN 911

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 premium chrome-vanadium steel is the alloy choice across the hex wrench line; the dimensional tolerances meet DIN 911 standard, which is what guarantees the tip fits the bolt recess without rocking. A tip that's a few hundredths off-spec rounds the bolt recess on the first stuck-fastener encounter; ours doesn't, because the forging and grinding processes hold the tolerance through the full production run.

Pro tip from our mechanics

If you're building a tool kit from scratch, this is the first hex-wrench purchase. The ball-end set is the second; the short-arm set is the third (and optional). For the framework on which wrench style fits which job: Hex and Torx wrenches for bike work →.