High Quality: Super Strong Heat Treated Chrome vanadium steel for Normal & Impact Drivers. Detent ball on each adapter for secure socket retentionPlease kindly notice, when using tools with , 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 /driver bits fits all quick-change drill chucks system as well as standard drill chucks. Sockets Snap-On Tightly & Won't Slip Off.Application: This adapter set is designed to provide a securely locked in 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. 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 .It is a good accessory for conversion.Colourfull design: Different colour coded rings, make it easy to pick the right one.color: blue +red +yellowMaterial: Chrome vanadium steelAll Sockets Standard 1/4 inch Hex Size:(1/4 inch hex to 1/4 inch socket),length about 65mm(1/4 inch hex to 3/8 inchsocket),length about 65mm(1/4 inchhex to 1/2 inch socket),length about 72mmPackage Contents:1 X (1/4 inch hex to 1/4 inch socket)1 X (1/4 inch hex to 3/8 inch socket)1 X(1/4 inch hex to 1/2 inch socket)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.