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 lights work great and look great too. Much brighter than stock. Pretty easy to install after you get the 2 tabs (top & bottom) on the old lights either compressed or just break them as their not need for install or removal there are 3 screws that mount the lights and seal them from the elements.
Steve Shell
Surfboard rack is good thing, that makes surfboard safe. And the free shipment is good initiative.
Thank you Aaron,
I've also promoted your business to other Mini owners who have viewed the website from Ottawa and Montreal Canada
You guys know your stuff amazing products and customer service, I am truly a satisfied customer
Regards, GregM