This wrench is sturdy effective and perfect for my water treatment needs. The polypropylene construction ensures durability and the ergonomic grip ensures ease of use. However, the product might not fit all Culligan polypropylene housing sizes. .
Excellent product, durable, hood is worth the money. The only problem I had was that it was too big for my filter. I find this odd because I was looking for my filter and then looking for which key to match. It still works, but it's a loose fit and that makes it quite difficult.