H125 Bi-Metal Holesaw Cobalt Industrial quality holesaw designed for machine or hand drilling in steel, stainless steel, cast iron, non ferrous metals, plastic and wood. All holesaws are packed in a newly developed space saving hang pack, featuring clear dimensional markings making selection easy. Visually appealing form makes any retail shelves come to life. Made from Bi-Metal Cobalt HSS for toughness and longer life Varied pitched cutting teeth reduces vibration for cleaner finish and greater accuracy International thread for use with Sutton Tools Quickfit Holesaw Arbour Item # H103 QFX Technical Specs: Diameter 57mm / 2-1/4 Thread 5/8