This is a tipper mechanism for a 1/14 1/16 scale truck trailer, it is made to fit in a 60mm or wider chassy.It comes with a 7.5 to 12 volt  mfa 950 d motor, 50 TO 1 RATIO ,can send with a slower but more powerful motor if required please let us know ,,when ordering ,The picture on the right shows one fitted to my trailer,Here is a link of it in action.. http://www.youtube.com/watch?v=VLyxzQlujhc,  The trailer is not included it is for display only. Thanks for looking, any questions please contact me on 07792343985