25 years of Fiberglass Experience. We come from a vast background of Boat Manufacturing. Everybody on the Fiberglass team has no less than Five years Experience in the Fiberglass Business. We used our knowledge of boat building and incorporated it into our T-Bars. We use only the best American made material. We use no fillers in our resins, and only use Owens Corning Fiberglass. We are the only t-bar company using Heavy Duty knitted 36/10 material in our fenders. This material gives the t-bar a very rigid feel, yet will flex without cracking or breaking. this is why we have a Five year warranty against cracking or breaking under normal wear and tear. So rest assure that if you buy any product from Fiberglass you are buying the best built all American made t-bars in the market place today!