A 25mm diameter dc motor, together with a motor bracket, a shaft connector and a multipurpose wheel.
 
Specifications
Rated Voltage: 6V (Voltage Range: 4V-12V)
Rated Speed: 135 rpm
Rated Current: 0.65 A
Rated Torque: 1.5 kg.cm
Contains
1x DC Motor-25
1x DC Motor-25 Bracket
1x Shaft Connector-4
1x Timing Pulley 90T
4x Screw M4x14
8x Countersunk Screw M3x8
2x Headless Screw M3x5