CM2550 - 12-Edge Sintered Tungsten Carbide Cast Cutter 12-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 – 2.22″ (56.39mm)Inner Diameter – 0.87″ (22.1mm)Width – 0.79″ (20.07mm)Weight – 0.6 lbs (0.272 kg)Materials – Hardened steel, tungsten carbideTip Shape – FlatNumber of Points/Edges – 12Shaft Size – 20mm, 0.75″