The popular SA Series strainer is reinforced with bronze outside tie rods, and a corrosion-resistant monel center tie rod. The top cap is easily removed for maintenance access by simply undoing the large bronze wingnut on the center tie rod. We offer these SA Strainers and spare parts with the extremely corrosion rsistant monel basket for saltwater use. Monel filter baskets for stronger-than-stainless steel corrosion resistance Clear Lucite sight glass Easy to clean - wingnut spins off for easy access to filter basket Bronze castings; drain plug for winterizing Filter basket specifications: 0.077" diameter holes, 96 holes/in & 45% open area