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.
The Best Looking Chrome 'Turbo' badge you will find anywhere period! It looks perfect underneath your 'Cooper S' badge.
Todd
OutMotoring is my favorite store. I have purchased several items from here and I have not been disappointed with any. Customer Service is great and they ship immediately. -- I'm always checking back to see if they have added any new items.
Dios Garcia
The last month I bought the EBC yellow stuff brake pads and the Dinantronics Port tuner, the shipment was very fast. Everything was excellent
The staff were very friendly and helpful.