High Quality Adapter Sockets: Each Adapter Is Made Of Heat Treated Chrome Vanadium Steel And Coated With Manganese Phosphate To Resist Rust And Corrosion And Ensure Long Life. Wide Application: Suitable For Quickly Change 1/4 Inch Chuck Systems Or Directly Into Drill Chucks. Each Cordless Drill In An Electric Groove Driver. Convenient For Quickly Driving In Nuts, Screws And Fasteners Etc. Spring-Loaded Ball Bearing On Head Holds Sockets Securely. Compatibility: Suitable For Screwdrivers Or Power Drills, Features 1/4" Quick-Change Chuck Systems Or Straight Into Drill Chucks. Change Your Hand Tool Socket Sets Into Impact/Drive Sockets. Specifications: 3 Piece 1/4" Drive Adapter, 3/8" Drive Adapter And 1/2" Drive Adapter And Each With A Set Of 1/4 Inch Hex Driver Socket Wrench Adapters. So You Can Turn Any Drill Into A Power Screwdriver With The Extra Reach. Specifications: 3-Piece 1/4" Drive Adapter, 3/8" Drive Adapter And 1/ Drive Adapter 2" And Each With A Set Of 1/4 Inch Hex Driver Socket Wrench Adapters. So You Can Turn Any Drill Into A Power Screwdriver With The Extra Reach.