The guide rail collars a great modification first bought to us via Stuart on his youtube channel
This modification allows you to set the heights for your tracks to stop the bowing at each end of the track.
Our collars are precision made to fit perfectly over our Guide Rail Dogs
What you will receive is
2 x 9mm collar
1 x Allen Key
Check out Stuart’s video here. https://youtu.be/XJ_1fLYJCCY