Tulex industrial tools offers female quick-change adaptors/quick couplers. These are also called as screwdriver bit holders. They have a 3/8" square drive female on one side and a ¼" hex drive female on the other end. These are also available in ½" square drive. The coupler has a spring release shell which retracts to accept the ¼" hex power type bits and nut runners. It is available in black industrial rust resistant finish. It is ideal for products where positive bit retention is required.
