ITEM NAME:7-Piece Universal Joint Set, Socket Drive Adapter and Reducer Set, 1/4 inch Z8B8 7-Piece Universal Joint Set, Socket Drive Adapter and Reducer Set, 1/4 inch Z8B8 Made from high-strength, heat-treated chrome vanadium steel Corrosion-resistant chrome plated finish 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. Common size combinations multiply the range and capability of any socket set Spring-loaded detent balls securely latch onto sockets, preventing them from being dropped 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. Color: silver Material: chrome vanadium steel Locks onto socket and drive tang. 2-Piece. Adapters: 3/8-Inch (F) x 1/2-Inch (M), 1/4-Inch (F) x 3/8-Inch (M). 2-pc. Reducers: 1/2-Inch (F) x 3/8-Inch (M), 3/8-Inch (F) x 1/4-Inch (M). Common size combinations multiply the range and capability of any socket set. Spring-loaded detent balls securely latch onto sockets, preventing them from being dropped 3-Piece Universal Joint Set 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. Material: Chrome vanadium steel Hardness: 60HRC. The diameter:6.3mm;10mm;12.5mm The total length: 41mm;55mm;75mm Package Contents: 7-Piece Universal Joint Set.Common size combinations multiply the range and capability of any socket set. Common size combinations multiply the range and capability of any socket set. The product is applied to repair, car modification, wrench socket transformation, to make leverages can turn to any direction.