Specifications:

Connector        JR (Universal)
Type        Analog
Bearings        Double ball bearings
Gears        1 metal + 4 plastic
Rotation        Continuous 360 degrees
Speed at 4.8V        42 RPM
Torque at 4.8V        5.0 kg-cm (69.56 oz-in)
Speed at 6V        55 RPM
Torque at 6V        6.2 kg-cm (86.25 oz-in)
Dimensions
Size        41.3×20.7×40.2mm (1.63×0.81×1.58in)
Weight        41g (1.45oz)