BikeService Carburettor Synchroniser Vacuum Gauge BS8117This vacuum gauge set contains precision gauges, each with its own damping control with a reading of 0 76 cm hg Gauges are mounted to a portable heavy duty metal base for benchtop use Supplied in a protective metal case Suitable for multi carburetor balancing Set includes: 1 x Synchronizer gauges with fixed plate 4 x Rubber pipe 8mm x 5mm x 1200mm Conical type connector: 4 x 6mm x 55mm 4 x M5 x 0. 8 x 55mm 4 x M6 x 0. 75 x 55mm 4 x M6 x 1. 0 x 60mm