Knurling Tool, Med Dia, 5 1/2 In OALMfr # CNC 75 2 R Item Knurling Holder Type CNC Modular, Medium Diameter Series CNC Capacity 1 to 5" Pattern Diamond Shoulderless Feed End Shank Square Wheel Dual Includes (2) Straight 25 TPI Knurl Wheels For Diamond Pattern Distance To Shoulder (In.) 0. 312 For Use With R Knurl Wheels Application For Right Or Left Hand CNC Lathe Applications Features Better Performance; For CNC Lathes; Includes TiN HSS Knurl Wheels; Interchangeable Shanks and Heads;