Adafruit Accessories Stepper Motor NEMA17 12V 350mA - - Amazon.com
STEPPERONLINE Nema 17 Stepper Motor Bipolar 2A 59Ncm(84oz.in) 48mm Body 4-lead W/ 1m Cable and Connector compatible with 3D Printer/CNC - - Amazon .com
Genmitsu Aluminum Z Axis Spindle Motor Mount, 300-500W Spindle Holder, 52mm Diameter for 3018-PROVer/PROVer Mach3/ 3018-MX3 - - Amazon.com