Rtelligent 5PCS 2.2N.M Nema 23 Stepper Motor 57*57 8mm Shaft D-shaft for CNC Engraving Milling Machine Rtelligent 5PCS 2.2N.M Nema 23 Stepper Motor 57*57 8mm Shaft D-shaft for CNC Engraving Milling Machine. Sale price : $119.00 Category : Home Improvement