Jayhawk Mustard Mill. Model: 3MPYC. Louis Allis Induction Motor, 10 hp, 3520 rpm, 220/440 V, 27/13.5 amps, 60 Hz, 3 phase. The ultimate in wet process stone grinding. These mills use designed, precision balanced, diamond cut stones. Inlet: 1 in. flared threaded end. Outlets: (1) 4 in. L x 1 in. W discharge. Overall dimensions: 32 in. L x 18 in. W x 16 in. H.