Fitment: Suitable for 2 cylinder machines. This Vacuum Gauge 2 Cylinder will help improve the performance of your motorcycle, providing you with a user-friendly of balancing your carburetor at home without the need for additional tools. The two gauges can be used individually or together, with a pair of rubber connectors on hand to provide four-way balancing. back plate make this a hard-wearing essential that'll last. Vacuum gauges enable easy synchronisation and balancing of motorcycle carburettors. Each unit includes precision gauges mounted on a robust metal base for worktop use. Enables easy synchronisation and balancing of motorcycle carburettors Each unit includes precision gauges mounted on a robust metal base for worktop use, threaded brass carb extensions (65mm and 180mm), connectors and vacuum hose. Specification: Type: Instruments & Gauges Sub-Type: Carburettor Balancing Gauge Colour: black Material: metal Size: 15cm x 10cm Gauge Diameter: 7cm Package Contents: 1 x Fuel Vacuum Gauge Balancer 2 x Vacuum Hose 2 x Connectors 2 x Threaded Brass Carb Extensions Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.