My Vbars are made exclusively of corrosive resistant aluminum with stainless steel hardware. You buy this system ONCE for a lifetime of trouble free service. With 1/8 inch walled bars, and 5/16 inch Vs, these bars will outlive your boats, your car, and even your college loans. The pads are of durable closed cell foam, and easily replaced. Each bar is shipped with an extra set of pads just in case. I build these bars to be one thing in this world we can all depend on.