Grizzly H5931 4-Piece Center Dril Length Set 82-Degree Size 1: Body Dia. 1/8", Drill Dia. 3/64", O.A. Length 1-1/4" Size 2: Body Dia. 3/16", Drill Dia. 5/64", O.A. Length 1-7/8" Size 3: Body Dia. 1/4", Drill Dia. 7/64", O.A. Length 2"