For turning and facing as well as knurling. Supplied with a set of high speed precision ground lapped medium diamond knurls. Dimension 3/4" x 3/8" x 1/4". Tool Specs: A: 1-3/16", B: 3-1/8", C: 2", E: 3/4", E1: 5/8". Tool Bit Sizes: 1/2 - 3/4" (not included).