1、Using sophisticated production technology, integrally forging and forming, and has high hardness. 2、Made of high‑quality materials, this screw driver socket is sturdy, durable, wear‑resistant and has a long service life. 3、The star hex design has a large contact area, which is convenient for operation and not easy to slip. 4、Adopts the surface bluing treatment, and this screw driver socket has excellent performance and is not easy to rust. 5、This type of screw driver socket can improve work efficiency and is suitable for long‑term use. Item Type: Screw Driver Socket Material: S2 Alloy Steel Length: Approx. 200mm / 7.9in Surface Treatment: Bluing Specification: 12 Bottom Square Diameter: 1/2in 1 x Screw Driver Socket