4.5mm D Shaft Reduction Ratio 8300RPM/120RPM DC 12V Worm Gear Motor Product Name : DC Worm Gear Motor;Model : JSX69-370;Rated Voltage : DC 12V;Motor No-load Speed : 8300RPM Gear Box No-load Speed : 120RPM;Reduction Ratio : 8300RPM/120RPM(415/6);Pin Number : 2 Shaft Diameter : 4.5mm/1.4", 6mm/0.24";Shaft Length : 14mm/0.57";Hole Dia : 2.5mm/0.1" Motor Size : 31 x 24mm/1.2" x 0.94"(L*D);Gear Box Size : 47 x 32 x 26mm/1.5" x 1.3" x 1:(L*W*H);Total Length : 78mm/3.6" Material : Metal;Weight : 141g;Package : 1 x DC Worm Gear Motor