Park Tool HCW-5 Headset Wrench

The Park Tool HCW-5 steering spanner is a double-ended spanner designed for bicycle bottom bracket lock rings. One side has a single hook, the other side has 3 notches for better engagement in the locking rings. Heat treated and nickel plated for a lifetime of use.Features:Universal hook end fits most notched circlips with an outer diameter of 43 to 46 mmThe three-hook end fits 3-notch fasteners with a maximum outside diameter of 46 mm and a smaller diameter (at the notches) of 40 mm