CM2520 - 7-Edge Sintered Tungsten Carbide Cast Cutter 7-edge 100% sintered tungsten carbide cast cutters are designed to fit your grinders and scarifiers. Select this style for tough scraping removal projects. Specfications Specfications Outer Diameter – 1.68″ (42.67mm)Inner Diameter – .53″ (13.46mm)Width – 0.47″ (11.94mm)Weight – 0.2 lbs (0.09 kg)Materials – Hardened steel, tungsten carbideTip Shape – FlatNumber of Points/Edges – 7Shaft Size – 10mm, 12mm, 7/16″, 1/2″