Features and Benefits:•49 piece 1/4’’ dr. impact master set includes a wide array of shallow and deep impact sockets to cover small and medium fasteners, both metric and SAE.•Set includes:3/16’’ through 9/16’’ Shallow Impact Sockets3/16’’ through 9/16’’ Deep Impact Sockets4mm through 15mm Shallow Impact Sockets4mm through 15mm Deep Impact Sockets1/4’’ Dr. Spring Loaded UJ AdapterMaterial: Cr-Mo alloy steel with black oxide finishDrive size: 1/4’’49 piece 1/4’’ dr. impact master set includes a wide array of shallow and deep impact sockets to cover small and medium fasteners, both metric and SAE.