Material: high quality chrome vanadium steel, quantity: 8 pieces, 4 x 1/4", 2 x 3/8", 2 x 1/2" Suitable for all drives of sockets, bit inserts, for direct drive via the drill chuck or with 1/4" hex mounting bracket For all drills, cordless screwdrivers and hand screwdrivers etc. Ideal for quick tool changes in electric screwdrivers For a firm hold, the hex shank can also be clamped directly into a machine chuck The hex shank is inserted into the drill, square to accommodate 1/4", 3/8" and 1/2" sockets Set of 8 socket adapters for 1/4", 3/8", and 1/2". Use: A must for any handyman and craftsman, this adapter kit should not be missing in any cordless screwdriver case. The adapters are suitable for high quality requirements and can even be used for changing car wheels. The useful adapter set is suitable for all cordless screwdrivers and torque wrenches or cassettes. With these three adapters made of high-quality chrome vanadium steel, you can use already existing sockets in your tool. Material: chrome vanadium, solid finish. Weight: 180 g Product Features: 1. This kit is ideal for your impact driver or drill and allows you to replace your ratchet with a power tool. 2. Suitable for quick change 1/4" systems or directly in the chuck. 3. Change your hand socket set into a drive socket set; The shank 1/4" hex is compatible with all quick change chucks as well as standard drill chucks. Specifications: Length 1/4 x 1/4 x 50mm - 1/4" 6.35 mm square. Length 3/8 x 1/4 x 50 mm - 1/4" 9.53 mm square. Length 1/ 2 x 1/4 x 50mm - 1/4" 12.7mm square. Length 1/4 x 1/4 x 65mm - 1/4" 6.35mm square. Length 3/8 x 1/4 x 65 mm - 1/4" 9.53 mm square. Length 1/2 x 1/4 x 73 mm - 1/4" 12.7mm sq. Length 1/4 x 1/4 x 25mm - 1/4" 6.35mm sq. Length 1/4 x 1/4 x 30mm - 1/4" 6.35mm square. Standard 1/4" hex shank. Contents: Pack of 8 adapters to sockets.