An essential tool for replacing a 10'' filter, but it should have been more sturdy/thicker, at least at the handle, because during replacement it receives a lot of pressure and hurts the hand, and you worry it might break. Personally, I always put a little petroleum jelly or cooking oil on the gasket points of the housing threads, always carefully so it doesn't get inside the filter area, and I tighten it lightly, but the next year it tightens again, though fortunately not to the point of breaking. A little trick is to use a double tool, and that way it unscrews more easily.