What sizes does the Park Tool AWS-3 Y Hex Wrench cover?

The Park Tool AWS-3 Y Hex Wrench is a three-arm Y-style tool packing 2mm, 2.5mm, and 3mm hex keys into one compact, palm-friendly design. These are the small hex sizes that appear constantly in bicycle service — derailleur limit screws, cleat hardware, brake pad retention bolts, and accessory mounting points across every bike type. The chrome vanadium steel hex keys are machined to precise tolerances for a snug, damage-free fit in fastener heads.

The Y-design creates a natural palm handle that improves torque control on small fasteners where over-tightening is an easy mistake, and the three fixed-position keys mean you can flip to the right size in one motion without swapping tools. For fast, controlled work on small hex fasteners, the AWS-3 is more ergonomic than a standalone L-wrench and more convenient than a multi-tool.