Feature One tool that does the work of a whole set, don’t need to change different sizes nut drivers or ratchet wrenches in your toolkit. Main Advantages Of our universal socket: 1. Flexibility to apply. This universal socket with self-adjust ratchet wrench and drill adapter can be utilized in many areas such as automobile repair, builders, manufacturing factories, household handyman etc. 2. Durable to use. The material of universal sockets is chrome vanadium steel. its hardness can reach 56HRC; Also, the heat treatment on the surface ensure the rust resistance. 3. Suitable for various fasteners. 54 round lining spring pin enable this wrench can retract to a variety of sizes and shapes. Sizes between 7mm and 19mm and shapes from hex, round and rectangle might work if you applied property. like screws,hooks,lag screws and bolt heads: 6-pt, 12-pt, star, spline, square, except rounded fasteners. 4. Brilliant gift idea. Handyman, handywoman or DIY person are all welcome it as it’s gonna to make their life easier. Package includes: 1 X Universal socket adapter 1 X Power drill adapter Note Do not use the socket adapter individually. It is recommended to use with ratchet wrench or electric drill. Do not use Socket to drive rounded fasteners. Not water-resistant,keep it away from water to extend its using life.