I have send messages and get answers all the time in less than 24 hours. I very happy to get this service in this day and age! I will be getting more things for my van.
These are excellent for mounting items, small solar panels and random gear, to the 80/20 cross bars. I have not tried it yet, but I am going to get longer screws and mount decking decking material with these. My only recommendation to purchasers is to think out your plans before tightening all of your bolts on the roof racks. You do have to expose one side of the cross bars in order to slide these in.
Great Products... Great Customer Service... You have to do business with FVCO!