Attwood LakeSport Adjustable Seat Pedestal -Hard anodized aluminum base pedestal tubes make this a great economical and durable option for any boater wanting years of enjoyment out of the investment.All LakeSport hardware is engineered to exceed ABYC standards. Ergonomic positive-locking handles with stainless steel Hard anodized aluminum base pedestal tubesSturdy 2 3/8in diameter bell pedestalsDurable and strong pedestal