Mityvac vacuum gauges are scaled 0 - 30 inches of Mercury (0 - 100 kPa). Compound gauges included on dual vacuum/pressure converter pumps are scaled 0 - 30 psi (0 - 200 kPa) pressure, and 0 - 30 inches of Mercury (0 - 100 kPa) vacuum.All Mityvac pumps produce vacuum at the front port. Dual converter pumps are capable of producing vacuum or pressure at the front port. A rotating knob on the side of the pump allows the operator to switch between vacuum and pressure. Dual converter pumps include a compound gauge for indicating levels of both.Maintenance kits include components necessary to perform routine maintenance on Mityvac pumps.All Mityvac pump vacuum/pressure ports fit standard 1/4" (6.4 mm) ID tubing.Applications:Brake bleedingFluid transfer, evacuation, and samplingFeatures:Comfortable ergonomic handle designOne-finger lever vacuum releaseField serviceable - service parts and kits availableIncludes:Mityvac Selectline Superpump hand vacuum pumpService Sheet (English, French, Spanish)Specifications:Material: PVCVolume per Stroke: 2 cu. in. / 32ccGauge: NoDual Converter: NoMaximum Vacuum: 25 in Hg, 85 kPaMaximum Pressure: N/AMaintenance Kit: MVM8902Mityvac MV8121 Selectline Superpump Hand Vacuum Pump 32cc