A 1/2"D universal joint designed for use with impact wrenches, that features interchangeable drive adaptors in 3/8, 1/2 & 3/4"D sizes that can be locked into the spring-loaded holder with a quick release collar. The 25°~30° working angle and 360º rotation ensures that this swivel socket adaptor is ideal for use on fixings that have very limited access in engine bays and confined spaces.