Features 1、Using high‑quality surface treatment, the anti‑rust function is doubled. 2、Made of S2 high‑grade alloy steel, overall induction hardening, strong wear resistance. 3、The product hardness reaches HRC58‑62 degrees, which can easily drill various materials. 4、With strong magnet, it is more professional, fast and convenient to use. 5、There are 10 screwdriver bits can meet your use and replacement needs, very practically Specification Item Type: Electric Screwdriver Bit Set Material: Chrome vanadium alloy steel Shank Type: Hex Shank Total Length: Approx. 70mm / 2.8in Package Included: 10 x Electric Screwdriver Bit Purpose: Non-accurate maintenance Package List 10 x Electric Screwdriver Bit