5 for almost 40 years but have noticed in the last couple of years that I cant take shoe measurments as standard and need to actually try them on to get a good fit. It definitely takes longer to take on and take off as compared to the original adapter designed for the square bar. Also, the rack is a little short. I was totally blown away! Overall, this is a smart investment for your expensive accessories and I think buyers will love it. I dont think theyd stand up to hard use. For a desktop, though, order a splitter with these. I like to listen to books on tape, and wanted a waterproof speaker so I could listen to them while I was in the shower without worrying about damaging the speaker. It is very easy to clean because it is painted very well with thick high gloss paint. Amending my previous review as had these a year and them being slightly small has actually been more of a positive thing.