CF1519 - 8-Spike Carbide Pin Flail Cutter 8-spike ultra-premium grade tungsten carbide pin flail cutters. Features Specfications Specfications Outer Diameter – 1.40″ (35.56mm)Inner Diameter – 0.47″ (11.9mm)Width – 0.24″ (6mm)Weight – 0.07 lbs (0.032 kg)Materials – SAE steel, tungsten carbideTip Shape – CylindricalNumber of Points/Edges – 8Shaft Size – 10mm, 7/16″