MATERIAL Made of Carbon steel, brand new and top-quality. The extension holder is designed for 1/4" hex shank bits, can be used for pneumatic screw drivers, electric drills, electric screwdrivers. It is strong magnetic and anti-rust.
Hardened tempered tool steel with chrome-finish holders. Shock-resistant tool steel for maximum durability. These bits will stay secure and never strip or break. The Heavy-duty construction allows for long life of these extensions.
APPIICATION Suitable for pneumatic screw drivers, electric drills, electric screwdrivers, screwdrivers.Universal uses in automotive, hardware, home, architecture and so on.
TO The is phosphatized to prevent rust, Drill bit extension holder are made with a super high quality heavy duty construction to ensure maximum efficiency.
CONVENIENT TO USE Designed for 1/4" hex shank bits. Good concentricity and fit all power drills, 1/4" impact drivers and hand-held drivers, allowing you to bring your bit extensions anywhere to get any job done, regardless of what type of power drill or driver is at your disposal.