4 Pair Knurling Wheel Kit With 3 Diamond & 1 Straight Knurls, H & H Industrial Products, Mfr#: 2220-0030

4 Pair Knurling Wheet Kit with 3 Diamond and 1 Straight Knurls ~ High speed steel. ~ Includes 1 medium with 21 lines per inch, 1 coarse with 14 lines per inch and 1 fine with 33 lines per inch. ~ Each knurl is 3/4 X 3/8 X 1/4. ~ Also includes 1 straight knurl.