Made of chrome vanadium steel (CR-V), very high hardness, anti-rust and anti-breakage, durable and long service life. Approximate length: 80 mm; stem size (approx.). : 6.35mm. Quick change and release, fits corded or cordless electric drills, pneumatic screwdriver, electric screwdriver, manual screwdriver. Used for DIY, woodworking, auto parts, machine repair, etc. Package includes: 1 x Hex Screwdriver. Features: 1/4" hex shank nut is compatible with impact drivers and other common power drills. Innovative recessed edge corners help roll flat, minimizing chips for a cleaner workspace. Made of Cr-V steel for increased impact resistance, hardness and resistance to abrasion, oxidation and corrosion. Used in pneumatic screwdrivers, electric screwdrivers, air drills, drills, guns, screwdrivers and other hands on installation of hex tools for the support. Features: Material: Chrome vanadium steel Sizes: 14 mm Approximate length: 80mm. Shank Size(approx.): 6.35mm. Use for: DIY, woodworking, auto parts, specializing in machine repair and so on. Package Contents: 1 x Hex Screwdriver Bit. SpecificationsHead Type: Hex Head; Hex Shank: