ITEM NAME:4 Piece Universal Joint & Reducer Socket Adaptor Set 1/2 3/8 1/4 Drive Descriptio n Description Features: This product is made from High-quality chrome vanadium steel CRV. Durable: Quenching heat treatment to the whole makes the hardness high, the product is durable. Beautiful: The surface of the product has been chrome plated so that it is rust proof and beautiful. Easy to use: The product is suitable for all the hexagonal side handle four square hole groove, the sleeve can be conversed to each other freely, easy to use. Widely used: The product is applied to repair, car modification, wrench socket transformation, to make leverages can turn to any direction. it is widely applied to the vehical transmission. Specifications: Material: Steel Colour: Silver Socket Converters included: 1/2 "turn 3/8" - - (12.7 mm square hole turn 9.53 mm square head) 3/8 "turn 1/4" - - (9.53 mm square hole turn 6.35 mm square head) 3/8 "turn 1/2" - - (9.53 mm square hole turn 12.7 mm square head) 1/4 "turn 3/8" - - (6.35 mm square hole turn 9.53 mm square head) Product List: 4pcs Socket Converters We offer you what you need! 4pcs 1/4" 3/8" 1/2" Drive Swivel Universal Joint Air Impact Sockets Adapters.Widely used: The product is applied to repair, car modification, wrench socket transformation, to make leverages can turn to any direction. it is widely applied to the vehical transmission. 4pcs 1/4" 3/8" 1/2" Drive Swivel Universal Joint Air Impact Sockets Adapters.