The Superb Wrench Metal Hydrotech fits the following:
The Metal Hydrotech RO Water Filter Wrench features a circle style design and fits Hydrotech Jumbo Housings. This water filter wrench is constructed with a longer handle for better grip and leverage. The Hydrotech 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.
Metal Hydrotech RO Water Filter Wrench specifications: