The Husky 19-Piece 1/4 in., 3/8 in., 1/2 in. Drive Accessory Set includes a variety of extensions, adapters, and universal joints that are made from alloy steel for strength and long-lasting performance. The finish provides resistance to corrosion. The chamfered lead-in on both ends allows for quick and easy attachment to the drive tools and sockets. Set includes 9 standard extensions - 1/4 in. drive (3 in. and 6 in.), 3/8 in. drive (1-1/2 in., 3 in., 6 in., and 10 in.), 1/2 in. drive (3 in., 5 in., and 10 in.), one 3/8 in. drive flex extension (8 in.), 4 drive adapters (1/4F to 3/8M, 3/8F to 1/4M, 3/8F to 1/2M, and 1/2F to 3/8M), 3 universal joints (1/4 in., 3/8 in., and 1/2 in.) and 2 bit adapter sockets (1/4 in. and 3/8 in. drive).