Secure engagement, easy to use, and fast! The CP-1 quickly grips cogs from 9 to 24 teeth with no manual adjustments. A great shop tool, the CP-1 is 13.7" (35cm) long and can be used with one hand to hold any 5- to 12-speed cassette solidly during lock ring removal. Forged steel construction with a spring loaded return and comfortable dual density grips.