RotaLoc Plus Cutter Kit 9/16, 11/16, 13/16. Contains 3 RotaLoc Plus cutters: 1 DOC - 9/16, 11/16, 13/16 diameter, plus 3 pilots in a sturdy plastic case. Convenient annular cutter kit holds (3) sizes of RotaLoc Plus annular cutters. 5/8 tool-less shank for quick size changes. Made from M42 HSS. Includes: 9/16, 11/16 and 13/16 dia. cutters plus three pilots. Made in USA.