DORIAN MMKT50R Knurling Tool Milling Machine Diamond Or Straight Flat-Face Pattern In And End Feed Single Wheel Weldon Shank Shank Length 2 In Shank Dia 1/2 In Head Length 2 In Head Dia 7/8 In Overall Length 3 1/8 In For Use With R-Type Knurl Wheels Includes (1) Straight 25 TPI Knurl Wheel For Straight Pattern