5 pc M35 Cobalt Stubby Drill Bit Set, 1/4" Hex Shank for Quick Chucks & Impact Drivers, SAE Sizes 3/32"-1/8"-3/16"-1/4"-5/16"; total length 1-3/4", 1-3/4", 2-1/16", 2-1/4", 2-1/4"; working length 3/4", 3/4", 1", 1-1/4", 1-1/4"
Suitable for drilling stainless steel and various hardened metals such as cast iron, titanium, bronze, aluminium, etc. All drill bits come with one piece 1/4-inch hex shank compatible with standard and quick change chucks and drivers
Made from M35 Cobalt steel
135° split point multi-blades drill tip
BEST PRACTICE: Drill at a slow speed. The faster a bit spins, the hotter it gets. And heat dulls bits quickly; Apply a coolant or cutting fluid to dissipate heat and lubricate the drill bit; Hold working material steady for greater accuracy and better results.