Morgan Carbtune Pro 2 column carburetor synchronizer/balancer. Perfect for Moto Guzzi v-twin and BMW boxer engines. 

Each Carbtune Pro kit comes complete with warranty, comprehensive instructions, nitrile hoses, restricters, and 5mm and 6mm adapters to fit virtually any two-cylinder motorcycle. Carbtune Pro motorcycle carburetor synchronizer will easily and accurately sync the throttles on motorbikes, 4-stroke outboards and snowmobiles. Superior resolution to dial type gauges Easily read scale Comes complete with 2 x 5mm and 2 x 6mm Brass adapters and rubber hoses to fit virtually any bike. Stainless steel columns indicate vacuum. No calibration or set-up required. High impact plastic casing and scale tubes - no glass. Dampers supplied to reduce fluctuations. Clips onto handlebars for hands free operation. Full instructions. Stores in the Tool Pouch made from black heavyweight nylon.: