The Superb Wrench Metal Nelson fits the following:
The Nelson Standard Filter Housing Metal Wrench fits white filter RO and standard Nelson filters, and many more. This water filter wrench is constructed with a longer handle for better grip and leverage. The Nelson filter wrench won't bend, bow or break due to its formidable zinc-plated, galvanized steel construction. This filter housing wrench is labeled with a directional arrow to make sure you turn it in the proper direction.
Nelson Standard Filter Housing Metal Wrench specifications: