Made of selected chromium and vanadium alloy, high hardness 48-52HRC and corrosion resistance and long service life. Precision industry ensures consistent performance and high accuracy. | Smooth surface provides comfortable grip and beautiful appearance. | Strong magnetic absorption, quick installation and disassembly, convenient and efficient operation. | 98 Optional tip to meet different requirements and easy to remove all kinds of screws, such as cross screws, ordinary triangle screws, H-type screws, five-way screws, slotted screws, Y-type screws, hexagonal screws, internal hexagonal screws, etc.