Great for truck topper
Review by tneut Posted on July 18, 2016Have used these on 2 different trucks over the last 14 years. They work great with the 78" rails on a full size pickup topper with 5 1/2' bed. Mounted the rails to the tracks first and then installed them and that kept them parallel so the pads can be adjusted (slid) . I move the rails to ...read morethe ends for the canoe and closer for the bike racks. They allow a great deal of flexibility.