Available sizes: 8mm High quality: made of heat treated chrome vanadium steel (CR-V) with magnet, very high hardness, anti-rust and anti-breakage, durable and long service life [Easy to use] Powerful magnetic nut driver, one-handed operation, easy to install and prevent falls. Laser marked size, easy to choose for beginners 6.35mm hex shank: quick change and release, suitable for corded or cordless electric drills, pneumatic screwdriver, electric screwdriver, manual screwdriver [Wide application] Ideal for woodworking, carpentry, machine and auto parts repair, etc. Nice gift for DIY enthusiasts Approximate length: : 65 mm. Shank dimensions (approx): 6.35 mm. Use: DIY, carpentry, auto parts, specialized in machine repair, etc. Contents: 10 nut screwdrivers magnetic. Note: it does not include other things, the color is based on the first picture, and other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the