Park Tool Pin Spanners have been designed to give maximum usefulness and versatility at the lowest possible cost. Tough, high carbon tool steel is used on each tool to ensure long life. Handle is vinyl coated to give a good grip. Each Pin Spanner is color-coded for easy recognition. SPA-1 FEATURES Fits adjusting cup on many adjustable type bottom brackets Round pin ends have a diameter of 2.9mm SPA-2 FEATURES Fits one-key release retaining rings on Shimano and Campagnolo cranksets and the adjusting cone on most freewheel clusters (not freehubs) Adjusts to a wide range of pin hole widths Pin diameter is nominally 0.090" (2.3mm)