Attributes: * HRC: 58-62* Size: T40* Drive Size: 3/8-inch* Total Length: 48mm / 1.89-inch* Color: Brass Tone, Silver Tone* Material: S2 SteelWhat Is Included: * 3 Pieces x Bit SocketsApplications & Features: --- The Bit Socket is made of S2 alloy steel with high hardness and strong rust resistance. The chromium-vanadium steel sleeve increases the rotation power.--- The drill bit end is chamfered for smooth fastener insertion and protects the drill bit and fasteners from edge damage. Stamped size markings for easy identification.--- Bit sockets are hand repair tools for fastener applications that can help you repair cars, bicycles, motorcycles, machinery, appliances, home improvement construction, woodworking, etc.