15 to 1 lifetime over High Speed Steel twist drills. 5 to 1 lifetime over standard cobalt twist drills. More heat resistant than HSS and less brittle than carbide. Work great on rough & uneven surfaces More heat resistant than HSS and less brittle than carbide. Work great on rough & uneven surfaces.

Made of the highest quality cobalt and coated with titanium for longer life. All drills have straight

shanks and are finished to drill quickly and cleanly.

Sold in pack of 5.

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