3/8-Inch Drive x 4mm Impact Hex Bit Socket Metric 2.36 Length Cr-Mo Steel

* Made of high-grade Chrome-Moly steel for strengthen and durable to use. * To protect against rust and corrosion the black phosphate finish absorbs and holds oil repelling moisture. * Sockets designed with a pin hole for use with pin and O-ring systems for secure socket retention. * It features a radius corner design causing the socket to grab the sturdy wall of the fastener instead of grabbing the corners resulting in less wear on the fastener. * Wide application in DIY hand-making household maintenance and most general repairs.