***The product is a tension mount installation and it only works on pontoon rails that are “completely” square. Please note some of the newer pontoon boats do not have completely square railings. These racks WILL NOT fit those style rails.**** Get all the advantages and storage capabilities of SUPRAX, designed exclusively for pontoon boatsYou have invested a lot of money into your beautiful boat. Why would you secure your SUP with ugly bungee cords? And that big board sure does take up valuable deck space You need a storage system that is as stylish as the rest of your boat. 061 Aluminum Alloy, Sandblasted Anodize Heat Press, Die Cut, EVA Protective Foam Heavy duty shock cords keep boards in place WARNING: California's Proposition 65