Amazon.com: STEPPERONLINE Nema 14 Stepper Motor 0.9deg(400 Steps/rev) 0.4A 11Ncm/15.6oz.in Bipolar 4-Wires : Industrial & Scientific
Stepper Motors
Nanometer Precise Motion with Stepper Motor-Driven Positioning Stages? Advances with Precision Mechanics, Modern Controllers and Error Mapping Algorithms
Nema17 Stepper Motors 400 Steps Per Revolution 2.2 Kg.cm Holding Torque - Stepper Motor - AliExpress