Brecoflex has all what you need for treads. they have every type of covering
if you go out to our web site we have a lot to show you
We have been doing tracks for the past 11 years so we have it down pretty good.
http://www.valleytech.k12.ma.us/robo...photos2004.htm
and if you need any other help e-mail me at
mikeanorton@msn.com I will try to show you how easy it is to get set up with tracks
http://www.valleytech.k12.ma.us/robotics/