Excellent working condition, inspected and very clean. Chemical metering pump by LMI Milton Roy, model D741-36, serial 91124240. Supports 1/2 inch couplers. Specifications: 115V, 3.0 Amp, Max 480 Gpd, Maxi 20 Psi. Pump has an external input, an internal/external switch, a standard grounded power cord, a knob to adjust stroke 0-100 and a knob to adjust speed 5-100. It measures 5 3/4 X 7 1/2 X 12 inches and weighs 19 pounds.