All 5 pumps are in excellent working condition, serviced and very clean. 5 heavy duty hydraulic water and trash pumps by Stanley, all are model SM23-B, serials 4339, 4343, 4332, 4375 and 4356. Four pumps have a 2 1/2 inches discharge brass fitting and all 5 pumps have half inch quick couplers (Aeroquip FD49 and Parker Bruning 3000 psi, in and out flow). Three pumps have their couplers installed on Dunlop Pulselife tubes max pressure 275 bar/4000 psi (total length 16 inches each). Two pumps have their couplers installed on Aeroquip Hi-Implulse 2781-8 tubes (total length 26 inches each). Specifications for all pumps: Runs dry without damage, integral motor, 1000-2000 psi pressure, 375 gpm capacity, 8-15 gpm flow range and -8 SAE O-ring porting. Acquired from Canada National Defense.