29 Piece Pro Grade Cobalt Drill Bit Set

Century's Cobalt drill bits are made from M35 steel with 5% cobalt and are designed for cutting hard metals like stainless steel. They are self-centering and suitable for use in power tools with a minimum RPM of 1,500.

• The description claims that the drill bits can cut through extremely hard metals, including stainless steel.
• The description claims that the drill bits are self-centering and penetrate faster with less pressure.
• The description claims that the drill bits require a power unit with a minimum RPM of 1,500 for maximum efficiency.