The Elite Dual Surf racks are saltwater friendly. They feature our Elite Backing Plate with black RWA logo medallion and an integrated webbed bungee strap with loop. It holds up to 2 surfboard with a max thickness of 2.75 inches. TINES ONLY EACH SOLD SEPARATELY Tine Surf Gaps 2.75 inches 6.98 cmMaterials 6061 aluminum Overmolded TPUMounting Hardware 316 stainless steel Salt water friendly