This kit allows you to synchronize the values of 4 carburetors, as well as aUS3t or set them. Tests both mechanical and electrical fuel pumps, and checks for worn or defective parts in fuel pump and vacuum system. Specifications: Material: metal Package size: 400 * 250 * 100mm / 15.7 * 9.8 * 3.9in Package weight: 3070g / 6.77lb Package List: 4 * Synchronizers with Fixed Plates (vacuum) 4 * Rubber s (8mm * 5mm * 750mm) 1 * Tubes with Conical Type Connectors(6 * 60mm) 4 * Tubes (M6 * P0.75 * 53mm) 4 * Tubes (M6 * P1.0 * 60mm) 4 * Tubes (M5 * P0.8 * 99mm) 4 * Tubes (M5 * P0.8 * 169mm) 1 * Case