Bosch Extra-Length Aircraft Black Oxide Drill Bit – 1/4-in x 12-in – 135° Split Point – Round Shank

Use this Bosch metal drill bit with a helix design that makes it easy and fast to drill. You can use this versatile bit to drill into metal, plastic and wood. It is also triple-tempered, which reduces friction and ensures it lasts 50% longer. The Bosch black oxide drill bit features a split contact that eliminates the need for a centre punch and prevents slippage.