Those are called rivets which are extremely durable and strong when installed correctly using a rivet gun, however, standard stainless bolts and nuts sourced from a local hardware store will work just as well.
I have ordered many items from Outmotoring in the past (I live in London) and the service they have given me has always been first class. If you have an issue with regard to an item or order, all you have to do is email them and they will always try to help you out and resolve the problem. I would recommend them for any of your Mini accessories. Eddie
Eddie Michael
Fantastic Customer Service from Aaron!! He is always helpful when I make a purchase and especially when I have a question and make a phone call, he's always helpful to answer my questions about an item or a purchase I've made. Very knowledgeable. Highly recommend OUTMOTORING!!
Ken Ayers
(Unlockmycarnow)
Great shopping with OutMotoring, Aaron is a charm has my mini looking great all the way over here in Bermuda. Thanks Arron.