" 8 Piece Kit: This socket reducer set includes 8 different sized tools including: 1" "to 3/4" ", 3/4" "to 1/2" ", 1 / 2 "" to 3/8 "", 3/8 "" to 1/4 "", 1/4 "" to 3/8 "", 3/8 "" to 1/2 "", / 2 " "to 3/4" ", 3/4" "to 1" ". Each socket has its size printed on the socket itself, making it easy to identify once you remove a handle from the case. Size Adjustment: This socket reducer assembly reduces and increases the size of square discs to allow greater flexibility for all your sockets and drive tools. And as a professional tool hardened and tempered for use commercial or occasional, it covers every application from 1/4 "" to 3/4 "" Drive. Ball Bearing: This clutch reducer assembly is designed with ball bearings on each piece to ensure the receptacles lock firmly in place. Adapter body is designed with transforming square head size to fit more size. And it attaches to your AIR tools, ratchets and other square drive accessories. High Quality Materials: This gear reducer set is made of chrome vanadium steel with the electroplating and blackening surface finish, which makes it resistant to corrosion and rust to provide you with durability maximum. The most different jobs the tree saves time on traditional manual braces. Features: Material: chrome-molybdenum steel Item color: Black Color of plastic housing: red Package weight: approx.1652 g Sizes: 1 "" to 3/4 "" 3/4 "" to 1/2 "" 1/2 "" to 3/8 "" 3/8 "" to 1/4 "" 1/4 "" to 3/8 "" 3/8 "" to 1/2 "" 1/2 "" to 3/4 "" 3/4 "" to 1 "" List of packages: 8 * plug converter 1 * plastic case "