3/4″ PNEUMATIC PISTON PUMP DRUM PUMPStock Number: P-21893/4″ PNEUMATIC PISTON PUMP DRUM PUMPMfg. WyandotteNo. E-261, 5-10, 226273/4 inch in and outAir poweredBuy with or without ss cart(1) available Posted in Pump, Misc., Vacuum, Blowers.