Makita 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. Designed to handle the high-torque demands of professional users in all trades, lasting up to 90x longer than standard bits. Comes in 3/8 SQ x 50 mm size.