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DC 5V Stepper Motor 28BYJ-48 ULN2003 Drive Module 5 Line 4 Phase
28BYJ-48: 5V DC, 5-wire unipolar, 4-phase, step angle 5.625deg/64 (with 64:1 gearbox, ~2048 half-steps/rev — widely published spec), motor diameter 28mm; kit packing: 1x stepper + 1x ULN2003 driver board; driver board ~1.37*1.18*0.6 in, four-phase LEDs; SunFounder page publishes only size/packing specs
BIQU Nema17 c42 motor CNC stepper motor Length 33mm 1.33A
NEMA 17 (42mm frame), body length 33mm, rated current 1.33A, ~78 oz-in holding torque class per product name, 4-wire bipolar; origin Guangdong, China
Stepper motor - NEMA-17 size - 200 steps/rev, 12V 350mA
NEMA-17 1.8deg/step (200 steps/rev), 12V 350mA/phase, 4-wire bipolar (title as published on adafruit.com product/324, referenced from fetched A4988 page)