Powerbuilt 3/8 Inch Drive x 4MM Hex Bit Socket – 648418

Powerbuilt hex bit sockets feature sockets that use a 2 piece press-fit design for strength and durability. Socket bodies are constructed of Chrome Vanadium Steel and mated to S-2 industrial-grade steel bits. Precision ground for a tight fit on cap screws and other internal hex fasteners. Dual grease rings offer better grip and easier handling with greasy hands.