4mm / 6mm Short Lengthen Tire connector Coupling for Robot Smart Car Wheel
Ideal for robotic, toy cars, various models of production!
Size: edge to edge 12mm
Aperture: 4mm, 6mm send screws and wrenches
For the motor shaft 3mm, 4mm, 5mm, 6mm,8mm.
Shaft coupling symmetric dual fixed aperture fixed motor shaft