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.
These look FANTASTIC on my 2015 MINI Cooper S COUNTRYMAN. The all chrome design goes Great with my chrome fender scuttles. Very happy I bought them.
Chris Doner
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Paul
Top notch company and service. Only place I could find a drain back valve for r53. $25 replacement vs $450+ for the entire oil filter housing. Best part was the service. UPS delivered my part 2 days late on a Next Day Air shipment ,which is not OutMotoring's fault, but OutMotoring went to bat for me and got me a refund. I really appreciate your customer service and other companies should follow suit. Thanks again you have earned my business from here on out.