These crank arms were machine polished to remove numerous scratches. It's a mirror-like finish that is much shinier than stock. However, the machine polisher was applied to vigorously and the surface of the arms show some waviness especially on the non-drive side arm. There are still some scratches which I tried to capture in the pics. They function fine. These arms come with black chainring bolts and the pre-load fixing bolt. Chainrings are not included.