Tha Strong Arm cost $25 and is delivered in a smooth ready to install finished condition. Sanding is only required if you want to paint them. They are now offered in silver and gold.This forum is full of threads and posts all complaining about poor quality of the product ..which is not cheap and liable to crack. But somebody sells a "solution" which costs...from what I see online...around $50 and the " manufacturer" does not even supply a finished product .....it needs laborious sanding of the rough inner surface.....and nobody thinks it warrants a complaint?