Drill Style PRONP Drill Diameter Decimal Inch 15 Shank Type Straight Shank Diameter Decimal Inch 15 Cutting Direction Right Through Coolant Yes Drill Depth by Diameter Ratio 3xD Strong shank and excellent design optimizes the performance of holemaking Special abrasive wear resistant surface treatment protects the shank from machined chips, increasing tool life Strengthened drill body provides better performance even in difficult cutting conditions Specially designed flute for long durability Coolant through