General description A 5 piece lockable impact adaptor set combining a lockable universal joint design with step-up and step-down drives. The set is specially designed to lock in-line when required, providing versatility and ease of use. Technical specifications Step-up adaptors: 1/4""D (F) to 3/8""D (M), 3/8""D (F) to 1/2""D (M), 1/2""D (F) to 3/4""D (M) Step-down adaptors: 3/8""D (F) to 1/4""D (M), 1/2""D (F) to 3/8""D (M) Full 360° rotation at angles up to 40° Material: Chrome molybdenum with black phosphate finish Pinless construction for additional strength