CF2514 – 5-Spike Carbide Pin Flail Cutter 5-spike ultra-premium grade tungsten carbide pin flail cutters. Features Specfications Specfications Outer Diameter – 1.68″ (42.6mm)Inner Diameter – 0.63″ (16mm)Width – 0.24″ (6mm)Weight – .104 lbs (.047kg)Materials – SAE steel, tungsten carbideTip Shape – CylindricalNumber of Points/Edges – 5Shaft Size – 10mm, 12mm, 7/16″, 1/2″, 9/16″