CPS 6 CFM 1/2 Hp Single Stage Vacuum Pump Features: Multi-voltage operation - the vacuum pump can be quickly converted to 115 or 230-volt operation. Sure grip handle - ergonomically designed for portability. Solid rubber base for improved shock resistance. Air cooled motors for operating under high temperature conditions. Ultimate vacuum ratings of 75 microns. Double intake - connections 1/4" SAE and 3/8" SAE male flare ports for use with mobile or stationary systems. Oil drain port - for easy vacuum pump oil maintenance. Vacuum pump oil level sight glass.