Good quality could be slightly narrower.

After the filter collection kept growing and had to be distributed among several plastic boxes, have to be able to transport me bought me this cover at all in a pile. The lids are high-quality workmanship made of sturdy aluminum, and the thread is impeccable. Serve their purpose perfectly.

I would only wish that they would be somewhat flatter - a cover (measured without screw) 7, the other 9mm wide, which makes the stack quite wide (you can also see in the picture). In the larger cover the thread is cut nearly in the full depth of what would not be necessary in my opinion, hardly a filter will have such a long thread.

But overall very satisfied with the lids, and the shipping of Time Trends was quick and easy.