Features: *3pcs Universal Common Socket Set Swivel Drive Adapter Reducer 1/4" 3/8" 1/2".*High Quality Chrome Vanadium Steel Universal Common Socket Set.*Sprung Ball Bearing on the Head Holds Sockets/Extensions Securely.* Locks onto a ratchet or extension bar.* Allows easy access in awkward areas.* Apply to repair, car modification, wrench socket transformation so that the lever can turn to any direction. Specifications: Product Name: Universal Socket Joint Material: Stainless Steel Chrome Vanadium Steel Color: Silver Size: 1/4" (6.3mm); 3/8" (10mm); 1/2" (12.5mm) Total Length: 41mm; 51mm; 70mm (approx.) Suitable for: all hexagon side handle four square hole groove, sleeve can be converted to each other freely, easy to use. Quantity: 3 pieces Package includes: 3 universal socket joint Note: 1. Transition: 1cm=10mm=0.39 inch.2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.3. Please allow slight manual measurement deviation for the data.