Performs vacuum related engine performance diagnostics and tune-ups. Includes durable, accurate gearless diaphragm style vacuum gauge with pinned connection. One-finger lever vacuum release. Comfortable ergonomic handle design. Performs fluid transfer, evacuation, and sampling The MV8010 is manufactured from durable PVC, feature one-finger trigger vacuum/pressure relief, and are field repairable. Our gauges feature a patented gearless diaphragm design that is extremely durable and accurate.