SM57-40M SM57-40M -- stepper motor, 84 in-oz US $59.00 BUY NOW! SM57-66M SM57-66M -- stepper motor, 230 in-oz torque US $69.00 BUY NOW! SM57-76M SM57-76M -- stepper motor, 280 in-oz US $79.00 BUY NOW! SM57-66M-11 SM57-66M-11 -- stepper motor, 11:1 gear head US $139.00 BUY NOW! SM57-66M-100 SM57-66M-100 -- stepper motor, 100:1 gear head US $145.00 BUY NOW! 57mm--NEMA 23  (5) Top of Page