Description:-This Vacuum Gauge 2 Cylinder will help improve the performance of your motorcycle,providing you with a user-friendly method 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.Brass extension bars and a steel 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: Product Name: Motorcycle Fuel Vacuum Gauge Balancer Material: Metal & Plastic Size: 15cm x 10cm Gauge Diameter: 7cm Color: Blue & Black Type: Instruments & Gauges Sub-Type: Carburettor Balancing Gauge Fitment: Suitable for 2 cylinder machines. Note:1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need.2. Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm)3.There are no instructions included in this kit.If you want to know how to use or install it,please contact us by Email.We will provide help as much as possible.Package Includes: 1 X Fuel Vacuum Gauge Balancer 2 X Vacuum Hose 2 X Connectors 2 X Threaded Brass Carb Extensions