Feature 1、Made of high strength chrome vanadium steel with black industrial finish for rust prevention. 2、Allow you to use the same impact wrench for multiple socket sizes. 3、Perfect for air tools, hand tools, impact tools. 4、Whole quenching heat treatment, durable high hardness. 5、Reduces & increases Drive sizes to allow for greater flexibility for all your sockets and drive tools.Features: Made of high strength chrome vanadium steel with black industrial finish for rust prevention. Allow you to use the same impact wrench for multiple socket sizes. Perfect for air tools, hand tools, impact tools. Whole quenching heat treatment, durable high hardness. Impact sockets efficiently transfer torque from impact wrench to fastener, loosening the most stubborn nuts and bolts. Reduces & increases Drive sizes to allow for greater flexibility for all your sockets and drive tools. Ball bearings on each piece to ensure sockets lock firmly into place. Complete set which covers every application from 1/4in to 3/4in Drive. Specification: Material: Chrome Vanadium Steel Item Color: Black Case Color: Blue Socket Type: Square Socket Screwdriver Type: Square Type Adapter Size: 1/4", 1/2", 3/8", 3/4 " Package Weight: Approx:540g/19oz Package list: 6 * Socket Adapter .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.