Fenders for the BMW 328 GT came with no mounting hardware. The existing mounting screws will not work as they have a non-removable washer that will not fit the countersunk mounting holes. Hardware stores don't have odd threads, so you can't use generic ones. Also, the quality of the guards is significantly lower than on the original BMWs, but again they are 2 times cheaper. The big problem is that you cannot install them.