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 hex tools, such as air screwdriver, electric screwdriver, air drill, electric drill, pistol, hand screwdriver, etc. Ergonomic Design - - Contoured non-slip handle, comfortable grip, compact, easy to carry. 10 Diameters Available - - Shank size: 1/4". Size: 6/7/8/10/12/13/14/15/17/19mm. Due to factors such as manual measurement and display differences, it may there may be slight differences between individual products and images, please excuse me.