TSINY High Torque Electric 12V DC Gear Motor Reversible Low Speed 3 RPM with 8mm Out Shaft Rated voltage: DC12V; No-load speed: 3RPM; Rated torque: 50kg.cm; Stall Torque: 145kg.cm; Rated Current: 1.8A; Reduction ratio: 1/30; Protection class: IP54; Low noise: db&lt;45 (A); Certification: CE; Main Material: Metal, Electronic component; Direction of rotation: CW/CCW; DC Motor Body Dimensions: 31 x 57mm/ 1.22" x 2.24"(D*L); Gear Box Dimensions: 70 x 42 x 27mm/ 2.75" x 1.65" x 1.06"(L*W*H); Output Shaft Dimensions: 8 x 12mm/ 0.31" x 0.47"(D*L) with 1 x 8mm/ 0.039*0.31(H*L) flat cut off and Internal thread M4*10mm; 19mm/7.4"; Package: 1PCS x DC Geared Motor; if you need other voltage and rpm, pls contact us, there are many other models of this motor in store.