Precision low inertia motors designed for low voltage applications,this is a great little motor to use if you are considering making a Diy wood stove fan and is very similiar,possibly even the same as the motor used by a lot of wood stove fan manufacturers ,its low startup current makes it perfect for use with peltier elements that are commonly used to supply the power in wood stove fans,it is also the motor of choice thats used in most solar ventilators that are on the market today,its specifications are as follows: Operating range is 1.5-9V. Rotation is clockwise as viewed from shaft end,Dimensions are 32mm dia. x 19.5mm length. Shaft length is 8.4mm x 2.0mm dia. Weight is 45g approx, Other Specifications are as follows,Nominal voltage 6 volts,No Load speed 2800rpm,No Load Current 20ma or 0.02amps,speed at Maximum Efficiency 2300rpm,Current at Maximum Efficiency 75ma or 0.075amps,torque g-cm 10, output watts 0.24, stall torque g-cm 50. price includes uk p&p