CF2116 – 6-Spike Carbide Pin Flail Cutter 6-spike ultra-premium grade tungsten carbide pin flail cutters.Select this pin style for your toughest asphalt and concrete removal projects. Features Specfications Specfications Outer Diameter – 2.25″ (57.1mm)Inner Diameter – 0.99″ (25.1mm)Width – 0.24″ (6mm)Weight – 0.16 lbs (0.1 kg)Materials – SAE steel, tungsten carbideTip Shape – CylindricalNumber of Points/Edges – 6Shaft Size – 20mm, 22mm, 3/4″, 7/8″