Features and BenefitsUltimate vacuum: 75 micronsInternal check valve to prevent escape of liquid oil1/4 horsepower motorPump speed: 1720 RPMIncludes easily accessible oil fill portThis deep vacuum pump includes T-fitting with 1/4" flare and 1/2" ACME ports Vapor discharge/Oil fill port. Other features include: thermally protected motor with on/off rocker switch, high volume cooling fan provides cool air to motor and pump, large oil level sight glass with min-max. oil level indicator, large, lightweight reinforced base for stable positioning, cooling fins keep temperature cooler during extended motor operation and an easily accessible oil drain valve. Electrical specs: 110V / 60 Hz.