This easy-to-use tool simply slides down into the lifter bore and is adjusted until expanded securely. Supplied with two followers: one for flat tappet cams and one for roller cams.Proform Engine Camshaft Checker Tool 68902Specifications: Feature/Benefit This easy-to-use tool simply slides down into the lifter bore and is adjusted until expanded securely. Tool Type LS Tools Finish Stainless Steel Category Cam Check Tool Description_ABR Cam Tool Description_SHO Cam Check Tool Description_INV Cam Check Tool Description_INV Universal Description_INV .750 to 1.050 Description_DEF Engine Camshaft Checker Tool Description_ASC Cam Check Tool Description_ASC Universal Type for Flat Tappet and Roller Cams Description_ASC .750-1.050 Range Description_LAB Cam Check Tool Description_LAB Universal Type for Flat Tappet and Roller Cams Description_LAB .750-1.050 Range Description_DES Cam Check Tool Description_DES Universal Type for Flat Tappet and Roller Cams Description_DES .750-1.050 Range Description_EXT Cam Check Tool Description_EXT Universal Type Description_EXT Featuring a .750 Inch to 1.050 Inch Range Description_EXT Includes Two Followers For Use With Flat Tappet and Roller Camshafts Description_EXT Sold Each Description_MKT This easy-to-use tool simply slides down into the lifter bore and is adjusted until expanded securely. Supplied with two followers: one for flat tappet cams and one for roller cams.