This Sealey Premier Impact Socket Adaptor Set includes three pieces designed for professional use. Manufactured from Chrome Vanadium steel with a manganese phosphate finish, these adaptors offer enhanced resistance to corrosion. They effectively convert any power drill into a power nut driver, providing added reach. The set contains 1/4"", 3/8"", and 1/2"" Sq drive adaptors. Each adaptor has a length of 65mm or 75mm. Sealey offers a lifetime guarantee on this product, subject to registration on their website within 30 days of purchase. The nett weight of the set is 0.095kg.