[Vanadium Chrome Steel] Our universal sleeve wrench is chromed steel, with high hardness, reliability and durability, and can be used effectively and practically. [complex design]: Bee nest design principle: The strongest and durable, the size of the bolts / nuts can be selected depending on the space to save time. Exquisite: The surface of the socket wrench is finely polished, electrophoresis, polished pneumatically and electrophoresis handles, which are beautiful and do not rust [wide range of applications]: The compact socket wrench allows you to quickly and easily complete the work of connectors of different sizes. Our products are suitable for the automotive industry, manufacturing, construction, etc., and constitute the ideal choice for your toolbox the shape of the key: one end is a Key Material: Steel 45 Function: Normal Surface treatment: Polished chrome Weight: 209 (g) size of the package: 29 * 20 * 5cm Universal sleeve, 7-19 mm Delivery: 1 * Pouch, 1 * Post Packing: Card shell (202g) Weight: about 209 grams