Suited for applications up to 8xD, TiAlN-coated R459 drills such materials as steel, stainless steel, cast iron, copper, and aluminum. Continuously Thinned Web geometry maximizes flute volume and cross sectional strength, outer corner design protects against wear and chipping, and 140º point angle facilitates centering and reduces thrust requirements. While consistent edge preparation protects against premature chipping and flaking, internal coolant holes help minimize machine downtime.