This item contains the 3 common sizes of sockets adaptor they are well made and solid. The colour coded rings make it so easy to . Super handy to have the three different sizes and so much quicker to be able to use drill, very convenient for attaching varied sized sockets to a power drill and using extension bars to to awkwardly located nuts etc. Perfect adapters for fitting type cordless screwdrivers for quick socket use. Feature - Color: As shown - Material: Steel - Size: 1.28 x 1.28 x 7.21 cm. - This adapter set is designed to provide a securely extension to your existing tool. Provides additional length to reach into a multitude of hard to reach spaces. The spring ensures a tight fit into the driver head to prevent slipping during use. Specifically machined to fit securely into a hand held driver, drill driver or impact wrench - The Shaft Design allows to easy & fast between the different size adapters without stripping at high operations – Sandblasted Finish for best durability - Spring Loaded Extension Bearings holds onto the sockets securely preventing fall-offs - Made if quality to ensure a long lifetime through tough torque jobs without breaking or rusting - turn square connector - Applies to the screwdriver handle or electric screwdriver tools (hexagonal hole or three jaw chuck can be) - Warm Tip: Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you! Package list: 3 x Socket Bits