High Quality: Super Strong Heat Treated Chrome vanadium steel for Normal & Impact Drivers. Detent ball on each adapter for secure socket retention.Please kindly notice, when using tools with socket adapter, torque Less than equal 50 Nm. Size: 1/4 inch , 3/8 inch and 1/2 inch drive adapter each with a 1/4 inch hex shank/driver bits fits all quick-change drill chucks system as well as standard drill chucks. Sockets Tightly & ' Slip Off. Application: This adapter set is designed to provide a securely locked in extension to your existing tool. 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. Specifically machined to fit securely into a hand held driver, drill driver or impact wrench. Multifunction: Used in the installation of pneumatic screwdriver, electric screwdriver, pneumatic drill, manual screwdriver and other installation for the hexagonal tool .It is a good accessory for conversion. Colourfull design: Different colour coded rings, easy to pick the right one. color: blue +red +yellow Material: Chrome vanadium steel All Sockets Standard 1/4 inch Hex Shank Size: (1/4 inch hex shank to 1/4 inch socket)Socket Adapter,length about 65mm (1/4 inch hex shank to 3/8 inchsocket)Socket Adapter,length about 65mm (1/4 inchhex shank to 1/2 inch socket)Socket Adapter,length about 72mm PACKAGE INCLUDES: 2 X (1/4 inch hex shank to 1/4 inch socket)Socket Adapter 2 X (1/4 inch hex shank to 3/8 inch socket)Socket Adapter 2 X(1/4 inch hex shank to 1/2 inch socket)Socket Adapter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.