General description This CSPARKV 10pcs Screwdriver Bit Holder set includes magnetic bit holders designed for use with various tools such as drills and screwdrivers. The holders are compatible with universal 6.35mm hex shank drill bits, making them versatile for different applications. Technical specifications Connecting Hex Shank: 6.35mm Total Size: 60 x 10mm Diameter: 6.35mm Material: Carbon steel and plastic Usage Ideal for transferring and extending various screwdriver bits. Convenient for picking up and holding screws due to strong magnetization.