Park Tool 36 mm & 40 mm Head wrench

Part of a range of combination Headset wrenches that cover all bicycle requirements

The Y-head design puts metal where it is needed for strength and durability

The laser-cut openings are a precise fit, as this operation takes place after the heat treatment process

Features a 36 mm wrench for 1-1/8 inch Headsets, and 40 mm wrench for 1-1/4 inch Headsets