RELN shower drains are made of premium 304 stainless steel, to ensure it is as corrosive and rust resistant with a long-life span. The low-profile drain is slopped to achieve the best fit, and function in a tile or stone installation. RELN drains includes a high-quality threaded adaptor with rubber O-ring that also helps in adjusting the height of the drain; the adaptor is compatible with most 2 in. PVC, ABS, and Cast-Iron Flanges. Other Bonuses - A lifting hook is included to remove the grate from the drain; a hair and debris lift-out strainer is also included to capture unwanted object to avoid clogging the pipe.