The TETRA rail is designed with a natural radius and 3-feet long length to provide excellent control and safety for spa applications, wall ladders as well as pool ingress and egress. Handcrafted of 1.9-inch OD tube with extra thick 0.90-inch wall stock for maximum strength and durability and finished to an attractive mild brush texture (No. 4 Metal Finish), upgradable to high polish, or marine grade paint finish. The Tetra Rail like all Pool Jewels’ rails is crafted in the USA of the finest and heaviest American Made stainless steel available. Steel options include 304 SS suitable for chlorine pools and 306 SS best for saltwater environments.