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A HSS or cobalt steel jobber length drill bit from Grainger can drill extremely hard materials. High-speed steel bits can cut through alloy and carbon steels, aluminum, brass, nickel-based alloys, plastic and wood. Cobalt steel bits can drill into cast iron, titanium and hardened stainless steel, and they meet National Aerospace Standards. Select any jobber drill bit set with split point drills to help reduce thrust and eliminate walking, or wire size bits for drilling applications that require specific hole dimensions. Find fractional size drill bits beginning at 1/64" and drill bits with angle points from 60 degrees to 140 degrees. Stock up today on jobber length drill bits from Grainger!