4-cylinder motorcycles Carburetor Vacuometer Balancer Synchronizer Tool Description: This 4-cylinder vacuometer will help improve the performance of your motorcycle by providing a user-friendly method of balancing the carburetor at home without the need for additional tools. Both can be used individually or together, with a pair of rubber fasteners on hand to provide four-way balance. Brass extension rods and steel back plate make this heavy-duty must-have durable and long-lasting The vacuometer can easily synchronize and balance the motorcycle carburetor Each unit includes precision gauges mounted on a metal base for countertop use, threaded brass carburetor extensions (65 mm and 180 mm), connectors and vacuum hose Suitable for 4-cylinder machines Specification: Name: Motorcycle Vacuum Meter Balancer Material: metal and Size: 15 cm x 10 cm Hole diameter: 7 cm Color: Black Type: Instrumentation Subtype: Carburetor Balancing Meter The package includes: 2x Fuel Vacuum Meter Balancer 2x vacuum hose 2x connectors 2x threaded brass carburetor extensions