When you need to get to nuts and fasteners in confined and restricted spaces or at awkward angles, look no further than the STEELMAN 95332 3-Piece Locking Universal Swivel Joint Chrome Adapter Set. This pack of 3 adapters includes 1/4-inch drive, 3/8-inch drive, and 1/2-inch drive sizes for use with most sizes of ratchets, torque wrenches, and other accessories. This adapter set has a unique 2-in-1 design that allows each drive adapter to function as both an extension bar and as a swivel adapter. Made from durable chrome vanadium steel, these adapters have a knurled aluminum slide sleeve to convert them between their two operation modes . The swivel feature allows true 360-degree rotational access fasteners in hard-to-reach areas. As an extension bar, the 1/4-inch drive adapter adds an additional 2.25-inches of reach, the 3/8-inch drive adapter adds an even 3-inches of reach, and the 1/2-inch drive adapter adds 3.625-inches of additional reach.