These small shaft couplers are ideal for connecting motors to driveshafts. The coupler has two set screws on each side to hold each shaft in place. This specific coupler is designed to connect a 2mm shaft to a 5mm shaft.

On the 2mm side these couplers work well with our 3-6V Hobby Motor and 2mm Diameter Shaft. The 5mm side will fit on most of our Stepper Motors and DC Motors.