Makita's Impact XPS is the best line of bits and fastening accessories to get any fastening job done. The Impact XPS bits are designed to handle the high-torque demands of professional users in all trades, lasting up to 90x longer than standard bits. The Impact XPS Socket Adapter is designed exclusively for use with high-torque impact drivers. Chamfered edges of the square drive end allows for easy installation and a retention ball helps secure the socket. The high quality steel construction provides increased durability and features a matte nickel surface for best in class corrosion resistance. Features: Impact XPS Socket Adaptor is designed exclusively for use with high-torque impact drivers. Chamfered edges of the square drive end allows for easy installation and a retention ball helps secure the socket. The high quality steel construction provides increased durability and features a matte nickel surface for best in class corrosion resistance. Specifications: Size 3/8" Type SAE Imperial