1pcs 5mm Micro 2-Phase 4-Wire Planetary Gear Stepper Motor Linear Screw Slider
$2.17
Slider travel: 8mm. Motor x 1pcs. - Phase resistance: 14.1 ohms. - 5V short circuit current: 280 MA or so. - Length of speed reducer motor: 12.7mm. - Motor style: Two-phase four-wire.