Plumbsure Rubber Tap washer, Pack of 6

I like the fact that there were a variety of sizes, so that one should fit the work I thought I needed to do. I haven't used them as they were not what I needed to use for the repair job I did. I bought them just in case they were needed. It was a repair job on equipment that I didn't fit myself. So I didn't know what I was dealing with.