Impact sockets are made of chrome-vanadium steel. These socket adapters each have an improved hardness, rust and rust resistant die-cast body, each with a ball bearing. Simple to use screwdrivers, perfect handy tool for hard to reach corners and restricted spaces. This adapter set is designed to provide a securely locked extension to your existing tool. The socket socket adapter kit includes 3 pieces of 1/4inch - 65mm, 3/8inch - 65mm and 1/2inch - 72mm. Suitable for screwdriver or electric drill or screwdriver handle tools, with hex holes or three-jaw chuck, they can be connected to the drill, rechargeable drill bit or manual wrench, extending their reach to inaccessible stenosis, bent screws, nut and more. Suitable for screwdriver or electric drill or screwdriver handle tools, with hex holes or three-jaw chuck, they can be connected to the drill, rechargeable drill or hand wrench, extending their reach to inaccessible stenosis, bent screws, nut and more. Color: silver Quantity delivered: 3 rooms Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.