Auniwaig Drive Bit Socket Hex Impact Socket Auniwaig is a company Professional selling different kinds of tools for Maintenance,Repair and Operation. Cooperated with a team of excellent materials engineers, experienced professionals and our faithful patrons, we are committed to providing high quality products and the most attentive service. Features Made of high-grade Chrome Molybdenum Steel (42) for strong and durable use. To protect against rust and corrosion, the black phosphate finish absorbs and holds oil, repelling moisture. Sockets designed with a pinhole 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. Notes The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.Please allow slight manual measurement deviation for the data. Chamfered ends insert smoothly into fastener head, reducing wear.Individual pinhole base design adds extra security by placing in a locking pin for stability when exerting strong torque motion especially on automotive projects.Use with ratchet to improve speed in tightening hex drive fasteners; And the product has no insulation properties and is not suitable for electrical environments.