Insert ProForm Universal Cam Checker Tool into the lifter bore and adjust until it expands into place. Then check the actual lift of solid and hydraulc camshafts. Includes a dial indicator, plus two followers, one for flat tappet or hydraulic cams, and the other for roller cams. Designed for lifter bores measuring 0. 750" to 1. 050".Pit Stop USA offers Proform Universal Cam Checker Tool 68902 at low everyday prices. Be sure to check out all of our products from ProForm including ProForm Cam Checking Tools and ProForm Engine Tools.