Massive torque for it's size. Must for heavy cyclic work. Specification: ●Stall torque:1.8kg.cm(4.8V) 2.2kg.cm(6.0V) ●Motion speed:0.16sec/60°(4.8V) 0.13sec/60°(6.0V) ●Rating voltage:DC 4.8-6V ●rotation current:180mA(4.8V) ●Temperature range:-20°C~+60°C ●Dimension:24 x 12 x 24mm ●Weight:11.2g