My experience using them? Well, given that they don't fit on the blank base that I also ordered from Address America, I would rate my experience as nil. I phoned Address America and had to leave a message as "all of their customer service agents were with other callers." That was a week ago and I still haven't received a call back. I also tried to call their order desk since I left the message and can never get through to anyone but it allows me to leave a message. If the first message didn't get returned I doubt a second one will either. All I wanted to know is if they carried any reflective numbers that would fit on the blank base I received. On the other hand my order arrived on time. I will not be ordering from them again given their lack of customer service.