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 sponsors professional road and mountain-bike race 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 →.