1" 90 DEGREE 6 FLUTE CARBIDE COUNTERSINK 3" Overall Length 1/2" Shank Made in USA 36149 Cutting edge geometry designed to reduce chatter and harmonics. Six flutes allow higher feed rates and provide longer tool life due to distributing the cutting load over a greater number of teeth. The 1" diameter is solid carbide. The larger diameters are brazed construction. Carbide offers excellent wear resistance, heat resistance and rigidity. Recommended for abrasive materials, difficult-to-drill materials and increased tool life in production applications
