Manufactured from Chrome Vanadium steel with manganese phosphate finish for added resistance from corrosion. Turns any power drill into a power nut driver with added reach. Contains 1/4", 3/8" and 1/2"Sq drive adaptors. Features & Benefits:Manufactured from Chrome Vanadium steel with manganese phosphate finish for added resistance from corrosion.Turns any power drill into a power nut driver with added reach.Contents: 65mm 1/4"Hex x 1/4"Sq Drive, 65mm 1/4"Hex x 3/8"Sq Drive, 75mm 1/4"Hex x 1/2"Sq Drive.Lifetime guarantee*.Model No. AK5521 Specifications: Model No AK5521 Brand: Premier Contents: 65mm 1/4"Hex x 1/4"Sq Drive, 65mm 1/4"Hex x 3/8"Sq Drive, 75mm 1/4"Hex x 1/2"Sq Drive Nett Weight: 0.095kg