Product details:

Welcome to BigWorld. IRWIN Impact Performance Series TURBOMAX Drill Bits are engineered for maximum durability and long life with impact drivers. They feature a one-piece construction that withstands higher torque loads than standard quick change bits that are built with a two-piece design. They have an exclusive TURBOMAX tip that eliminates "walking," gets 10X faster starts, and stays sharp longer. These bits are made from premium high speed steel with a black and gold oxide finish that resists corrosion. Plus, they have a 1/4 inch quick change shank that's designed to work with impact drivers, as well as reduce slipping when used in standard drill chucks. 10X faster penetration than standard bits Good quality, to bring you more intimate service.