Made of anodized, Almag 35 aluminum. Pedestals are 2" diameter. Allows tables and seats to be moved, removed or positioned wherever desired. Features a patented locking mechanism for a snug fit. Made of anodized, Almag 35 aluminum. Bases have a self-closing cover that leave decks unobstructed. Fits 2" diameter pedestals. Allows tables to be moved, removed or positioned wherever desired with a snug fit. Made of anodized, Almag 35 aluminum. Fits 2" diameter pedestals.