A top quality heavy duty set of EIGHT impact adaptors for professional or occasional use. Manufactured from Chrome Vanadium Steel (CR-V) for longevity and durability, resisting abrasion, oxidation, and corrosion. Each has a spring ball socket retention fitting. Sizes include: 1 x 1/2"F x 3/4"M, 1 x 1/2"F to 3/8"M, 2 x 3/8"F to 1/2"M, 2 x 3/8"F to 1/4"M, and 2 x 1/4"F to 3/8"M. All sockets are laser etched for easy identification and have a black phosphate finish for protection against corrosion. Supplied on a handy metal rail for neat storage and easy transportation.