ITEM NAME:Impact Socket Adapter Extension Set Turns Power Drill Into High Speed Nut D Y4A5 Impact Socket Adapter Extension Set Turns Power Drill Into High Speed Nut D Y4A5 High quality material to avoid broken during the usage. General Usage: This 3 piece Hex Shank Bit Driver Extension Bar Set is designed to meet a variety of needs. Fits snugly and securely in your drill chuck or hand held driver. Consisting of your most common bit sizes 1/4inch, 3/8inch, and 1/2inch changing shank sizes. Provides versatility and convenience no matter which tool you chose to use. Great for the DIY, household maintenance, and most general repairs, not for industrial work. A great tool addition to any tool box set. Purpose: 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. Easy to Choose: Different colour coded rings, make it easy to pick the right one. Handles the toughest jobs Hex shaft saves time changing out of Power Drill Saves time over traditional hand operated nut drivers All Sockets Standard 1/4inch Hex Shank Size: 1/4 * 1/4 * 65mm length ------ 1/4 inch shank can be converted to 6.35mm square head 3/8 * 1/4 * 65.8mm length ------ 1/4 inch shank can be converted to 9.4mm square head 1/2 * 1/4 * 68mm length ------ 1/4 inch shank can be converted to 12.6mm square head colour:black Material:Chrome vanadium steel Package Contents: 3 * Socket Adapter.Purpose: This adapter set is designed to provide a securely locked in extension to your existing tool. 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.