This adapter set is designed to provide a securely extension to your existing . Provides additional length to reach into a multitude of hard to reach spaces. The spring ball lock ensures a tight fit into the driver head to prevent slipping during use. Features - ColorAssorted Color - Size: 5.80X1.50X1.50cm/2.28X0.59X0.59 inch. - Material: Chrome-vanadium steel. - It is made from premium chrome-vanadium steel, which greatly improves the strength and abrasion resistance of the workpiece. - The extra electroplating process provides products with higher rust-resistance and better gloss. - shaft fits all adapters, extensions and drill chuck. - This is light weight and small size which mean it saves space. No need to carry bunches of sockets. - The chamfered edges and spring-loaded detent ball will ensure a tight and secure fit, thus allowing you to save your and perform auto repair tasks easily. Package list: 2 sets x power drill socket adapters