Usage Scenarios - - Suitable for household DIY, woodworking, auto parts, construction sites, professional machine repair, etc. Multi-Function - - Can be disassembled from various shapes of nuts, screws, hooks, grille screws, bolt heads, etc. Applicable Tool - - Applicable for installation in these hexagonal tools, such as pneumatic screwdriver, screwdriver electric, air drill, electric drill, gun, hand screwdriver, etc. Ergonomic Design - - Contoured non-slip handle, comfortable grip, compact, easy to carry. 10 Diameters Available - - Stem Size: 1/4". Cut : 6/7/8/10/12/13/14/15/17/19mm. Due to factors such as manual measurement and display differences, there may be slight differences between individual products and images, please excuse me.