HS3001 - 15-Edge Blunt Hardened Steel Cutter Designed to fit your SMITH FS351 and competitive model scarifiers. For gently removing coatings, light profiling, curing compounds, traffic paints, heavy oil, and grease deposits on concrete or asphalt. Specfications Specfications Outer Diameter – 3.02″ (76.7mm)Inner Diameter – 1.03″ (26.1mm)Width – 0.187″ (4.7mm)Weight – 0.251 lbs (0.113 kg)Materials – SAE high-strength carbon steelTip Shape – BluntNumber of Points/Edges – 15Shaft Size – 22mm, 25mm, 7/8″, 1″