Proto J4990-8M Hex Bit Socket Drive 3/8 Inch Depth Standard Alloy Steel 8mm is a high-quality tool made by Proto. It is a single item that includes a standard socket type with a hex/allen drive size of 3/8in. The socket is made of alloy steel and has a chrome surface finish. The manufacturer part number is J4990-8M and the socket size is 8mm.
