* 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.
