Material: Made of high quality, high hardness chrome vanadium alloy steel, features high hardness, high torque, good toughness and long service life. Size: outer circle Diameter 26 mm, inner circle Diameter 19 mm, height 52 mm. the Universal socket wrench is suitable for 1/4 to 3/4 inch 7-19 mm nuts, screws and bolts. Package includes: 1 x Universal Socket, 1 x Adapter. It grips to any shape, for example, screws, rotating hooks and square nuts, hex nuts, etc. This unique wrench is made up of 54 pins, advanced spring , not easy to deform, in order to adapt to all sizes of bolts and nuts, prefer saving space and money thanks to this universal ratchet wrench. Ideal for the automotive industry, the repair of appliance, manufcture, construction and other industries, or when you want to loosen screws, nuts, hooks and other fasteners. It is completely perfect for your toolbox.