Motorcycle Carb Carburetor Fuel Vacuum Gauge Balancing Cylinder Tool Kit Specification: Condition: Brand New!! Product Name: Motorcycle Fuel Vacuum Gauge Balancing Device Material: Metal Plastic Size: 15cm x 10cm Gauge Diameter: 7cm Color: Blue Black Type: Tools Balancing Gauges: Set Fitment: Fits 2/4 Cylinder Machines. Features: This vacuum gauge 2 cylinder will help improve the performance of your motorcycle by providing a convenient way to balance your carburetor at home without the need for additional tools. The two gauges can be used separately or together with a pair of rubber joints to ensure four-way balancing. Brass extension rods and steel back plate make this a durable and long-lasting item.-Vacuum gauges make it easy to synchronize and balance motorcycle carburetors.-Each unit includes precision gauges mounted on a sturdy metal base for benchtop use. easy motorcycle carburetor synchronization and balancing - Each unit includes precision gauges mounted on a sturdy metal base for benchtop use, threaded brass carb extensions (65mm and 180mm), connectors and vacuum hose. Note: 1. We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one you need. 2. Please allow 0.5-1 inch difference due to manual measurement. (1 inch = 2.54 cm) 3. This kit does not include instructions.