This is a socket sleeve accessory, which is made from chrome-vanadium steel material and can support longer period of using. Good polishing process, comfortable touching feeling, no burrs, it has high hardness and stable working performance, will not damage to your hands, very practical and professional. Features - Color: Assorted color. - Material: chrome-vanadium steel. - Size: 5.00X4.00X4.00cm/ 1.97X1.57X1.57inch. - Specification of the sockets: 14mm, 17mm, 18mm, 19mm, 21mm, 22mm. - It is made of chrome-vanadium steel material, fine polishing ensures smooth surface, can be used for longer time. - Widely range of applications, this sockets can be used for home, repair shop use and more scenes you need. - Strict producing process with fine details, very tough and sturdy, durable as well as practical. - Scientific and reasonable structure, it can help the electric wrench to have work with the stable performance. - Light weight and proper size, making it easy to use and convenient to take and store. Package list: 6 x impact sockets 1 x adapter(8/3) 1 x screwdriver cover 1 x drill chuck 1 x screwdriver bit 1 x whistle 1