These motors have a 2mm dia, spindle, suitable for use with gears, pulleys, wheels, cams, off-centre mass, etc.
Holders for the motors and a battery box are included.
There are plastic straps (cable ties) that can be used to attach the motors to other kit parts.
MM28 motor (up to 6V)
MM12 motor (up to 3V)
Holder for each motor.
2 x straps.
Battery box for 2 x AA batteries (with integral switch).