The Heavy Duty RFMPS2 roof rack system permanently attaches to your roof via rivets. Its key feature is a base which swivels to allow a better fit to a wider variety of roof shapes including flat, angled and curved. Featuring a low profile design, this system is aesthetically pleasing and maintains its looks after years of continuous use. Utilizing our tough Heavy Duty bars, this system offers you compatibility with a wide selection of Rhino-Rack accessories. So whether you're a traveler, cyclist, surfer or contractor - the Heavy Duty RFMPS2 roof rack system has you covered.