With the concave hexagonal design inside this socket wrench, the nut is easier to embed, and the hexagonal shank, the torque is high and the load capacity is strong. It has undergone overall high temperature quenching and heat treatment, with high hardness, corrosion resistance and wear resistance. There is a lot of applications of this socket wrench compatible installation and removal of hexagonal screws and nuts. It can be used with lithium-ion drill, impact drill, electric screwdriver, etc. It is constructed of steel material. There are 5 sizes compatible you to choose from. The socket wrench is suitable compatible DIY, auto repair, construction, decoration, etc. Item Name: Socket Wrench Material: Steel Features: Durable, Hard, Efficiency, Wide Applications Size Details: A, Outer Diameter: 1.1cm/0.43", Length: 8cm/3.15"(Approx.) B, Outer Diameter: 1.2cm/0.47", Length: 8cm/3.15"(Approx.) C, Outer Diameter: 1.73cm/0.68", Length: 8cm/3.15"(Approx.) D, Outer Diameter: 1.73cm/0.68", Length: 8cm/3.15"(Approx.) E, Outer Diameter: 2cm/0.79", Length: 8cm/3.15"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Socket Wrench