The Park Tool HCW-4 Crank and Bottom Bracket Wrench, click to enlarge
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Item # HCW-4

/ Tools / Crank & Bottom Bracket

Crank and Bottom Bracket Wrench

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.

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HCW-4 Features

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

Parts & Accessories


Replacement Parts

Replacement Pin