Lightnin Open Tank Mixer. Model: NLDG-200. S/N: 714161. Gear driven for maximum output torque. Positive chuck max. propeller shaft diameter: 3/4 in. Positive drive chuck is equipped with attached flange and 1-1/2 in dia. x 6 in. L shaft with keyway. Shaft is ready to couple with desired mixer shaft. Mixer mounting flange dimensions: 13 in. L x 13 in. W with (4) 29/64 in. dia. mounting holes at a center-to-center distance of 11 in. Lightnin Motor, 2 hp, 1740 rpm, 350 rpm (final), 230/460 V, 6.3/3.15 amps, 60 Hz, 3 phase. Overall dimensions: 13 in. L x 13 in. W x 35 in. H.