Fisch Multi-Spur Bit (2-1/2" x 1/2") - Best Drill Bits for Wood, Provide Precise Pocket Holes - High Performance Design with Center Point, 2 Cutters and 2 Spurs - FSA-010425 - Made of Tool Steel Clean, precise pocket holes and skip free clean cutting edge CNC-Diamond ground and centrally ground center point Drop Forged from tool steel, for superior sharp edge retention High performance design with center point, 2 cutters, 2 spurs and reduced cylindrical shank Drill up to 300 holes before re-sharpening is required. Verified by independent test results