The ones I tried used double-sided tape, and definitely not the high-end 3m type tape. I get that panel fix used on Cars is super strong, but it's bloody expensive at close enough to $100 a tube in Oz. I lost some bonnet trim off my car, and tried high-strength epoxy; it lasted a year, but it is where you pull the bonnet open. My mechanic did the rego inspection a week ago and glued it back with proper Panel fix, so I hope this time it lasts more than a year. BTW, I pissed off the stick on badges and went back to screw ons after they came loose, real quick.