You Are Looking at A Dry Run OIL-LESS VACUUM PUMP: High performance Twin Piston 1/2 HP 4.5 CFM, Good for Medical, dental Laboratory and Workshop equipment hookup. Push and pull/compressor or vacuum pump. Save the oil, no oil mist problem and Save the money on oil, Zero maintenance cost. Dry Run Twin Piston Oil-less Vacuum Pump 310 W 3.5 CFM Medical Dental Science Laboratory Workshop CNC Table Hookup etc Track Page Views With Auctiva's FREE Counter