This vacuum gauge kit is designed for use with 4 cylinder motorcycle engines, providing a practical solution for synchronizing and carburetors at home.The set includes two vacuum gauges that can be used individually or together, allowing for four-way carburetor with the help of included rubber connectors.Mounted on a steel back, the gauges are built for stability and long-term use.Brass extension bars in two lengths—65mm and 180mm—are included to fit various setups, along with a vacuum hose and threaded connectors for secure attachment.The unit enables accurate measurement of intake manifold pressure, assisting in tuning and optimizing engine performance.All components are housed on a robust metal base suitable for worktop use, making it a functional addition to motorcycle maintenance tasks.Material: metal and plastic Size: 304x100mm (11.97x3.94 inch) Type: Instrumentation Sub type: Carburetor gauge Package includes: 1 x Fuel vacuum gauge balancer 1 x Vacuum hose 1 x Threaded brass carburetor extension Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.