10Pcs 2-Phase 4-Wire Stepper Motor 3.9MM Micro-Stepper Motor
Specification:

Quantity: 10Pcs
Motor diameter: 3.9 mm
Motor height: 8.5 mm (containing the bearing sleeve)
Output shaft diameter: 1.7 mm
Output shaft length: 6 mm
Motor type: two-phase four-wire

Package Included:

10 x 3.9 MM 2 Phase 4 Wire Micro Stepper Motor