Park Tool Headset Wrench

HCW-4:

The Park Tool HCW-4 is a double-ended wrench that fits two common fittings found on adjustable cup-and-cone bottom brackets. One end is compatible with the raised 36 mm wrench flats commonly found on fixed cups, and the opposite end features a pin spanner with two pins to fit many adjusting cups with pin holes. Heat-treated and nickel plated for a lifetime of use.

• Center-to-center measurement between pins is 29 mm
• Pin diameter is nominally 2.2 mm

HCW-11

The HCW-11 is a double-ended wrench that fits two common fittings found on adjustable cup-and-cone bottom brackets. One end is compatible with the raised 16 mm wrench flats commonly found on adjusting cups, and the opposite end features two prongs approximately 23 mm apart (center-to-center) for cups with recessed slots. These fittings are common on older bicycles and less expensive bicycles including department store bikes. Heat-treated and nickel plated for a lifetime of use.

HCW-5

The Park Tool HCW-5 is a double-ended wrench designed to fit lockrings found on cup-and-cone bicycle bottom brackets. One side features a single hook, the other side features 3 notches for better engagement in the lockrings. Heat-treated and nickel plated for a lifetime of use.

• The universal single hook end will fit most notched lockrings with an outer diameter of 43 to 46 mm.
• The three-hook end will fit 3-notch lockrings with a maximum outside diameter of 46 mm, and minor diameter (in the notches) of 40 mm.

NOTE: The HCW-5 is designed for bottom bracket lockrings. For fixed gear lockrings, use the HCW-17.

HCW-15:

The HCW-15 is a purpose-built wrench for the installation, removal, and adjustment of threaded headsets. Features our classic headset wrench design, nickel plated with wrench openings that are laser cut after heat treating to ensure a tight, accurate fit.

• 32 mm & 36 mm wrenches