Greartisan DC 12V 300RPM N20 High Torque Speed Reduction Motor with Metal Gearbox Motor for DIY RC ToysProduct Advantage: Small size dc gear motor with low speed and big torgue! 12mm gear motor provide 0. 1Nm torque and more reliable! DC gear motors can match encoder, 3ppr! 8 kinds of Reduction ratio: 10,30,50,100,150,200,298,380! Specifications: Rated Voltage: DC 12V Reduction Ratio: 1: 100 No Load Speed: 300RPM Rated Torque: 0. 6Kg. cm Rated Current: 200mA D Shaped Output Shaft Size: 2. 5*9. 2mm (0. 098'' x 0. 36'') (D*L) Gearbox Size: 9 x 12 x 10mm