1pcs Motorcycle Carb Carburetor Fuel Vacuum Gauge Balancer Synchronizer Tool Specification: Condition:100% New Model Number: B86838 Product Name: Motorcycle Vacuum Gauge Balancer Material: Metal & Plastic Shell Color: Blue Lens Color: Transparent Diameter: 7cm / 2.75" Height: 9cm / 3.54" Quantity: 1pcs Fitment: Universal For Motorcycle Features: - High Cla Quality and Very Durable - Each gauge has damping control and calibration control. - Easy to install. - Excellent quality vacuum gauges enable easy synchronisation and balancing of motorcycle carburettors. Package Includes: 1 x Motorcycle Vacuum Gauge Balancer Note: 1.We provide clear pictures, measurements where poible. Please check as much as poible 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 poible.