I got my Gozzard fenders about 2 weeks ago.. They are really nice.. and fit really well . Clamped them on first and bolted them up.. They are made from about 1/4inch fiberglass.. I put 2 bolts in them and stood on the fender and they barely flexed. They are tough and I highly reccomend anything from Mike Gozzard. Took a look at his tubs while I was there and when the time comes I know I will be getting one from him.. So If there is any doubters out there, don't doubt and just get them..