I brought this item to replace the rusty collar that holds my CBR exhaust system to the frame. The collar was reasonably priced and in my opinion well made. Im so happy with it im about to buy 2 more to replace the 2 used on the rear silencer supports. These collars go between the rubber bushes which houses the pins to hold the rear silencers to the frame and houses the pin which holds the down pipes to the frame. A must if your renovating your CBR.