Feature: Great replacement for the rusty or damaged DC geared motor on the machine. Round shape and with 3mm diameter long shaft and 2 terminal connectors. Fine craftsmanship,durable,not easy to wear, light weight, high torque and low RPM. Specification: Model: GA12-N20. Material: Metal. Shaft Dia: 3mm. Total Length: 37mm. Motor Size: 17 x 12mm(L*D). Shaft Size: 10mm x 3mm(L*D)(Please allow 0-2mm error due to the manual measurment.). Package Included: 3x Mini Speed Reduction Motors Warm Tips 1.Due to manual measurement, there may be a slight error in size. 2.Due to the light of the picture and the display of the screen, the color of the picture may be slightly different from the actual object