Small Stepper Motor - ROB-10551 - SparkFun Electronics
Amazon.com: MybotOnline Nema 17 Stepper Motor Full D-Cut Shaft 62oz-in 1.7A Bipolar 38mm 1.8deg 4-Lead for 3D Printer CNC Reprap : Industrial & Scientific
Stepper Motor with Cable - ROB-09238 - SparkFun Electronics
Amazon.com: STEPPERONLINE Stepper Motor Nema 17 Bipolar 40mm 64oz.in(45Ncm) 2A 4 Lead 3D Printer Hobby CNC : Industrial & Scientific