WinTech's superior pontoon design provides ample stability, while ensuring a smooth, dry row with minimal drag. Pontoon measures 37" L x 6" W x 4" H . 3 lb per pontoon. Pull-pins allow you to quickly mount and de-rig the shell during launching. The bracket allows a range of 3-6" of adjustment to accommodate rowers of varying weights. The pontoons can be raised off the water for emergency back up situations like cold-water rowing or for instructional purposes.