When pliers come from the manufacturer, they are not perfectly smooth and they have ridges that could possibly damage any part that they touch. To fix this lots of sanding and buffing is required. As you can see, they come with lots of ridges. These are my double ended pad slick, round nose pliers, small duckbill pliers, and large duckbill pliers. Note how you can not see a reflection in the duck bill pliers. This is after a few minutes of sanding with 400 grit sandpaper on my flat surface. This is done with 400 grit sandpaper. I was able to get most of the surface completely flat. It took forever to get all of the scratches out! This is after 600 grit. Ready for the buffing machine. After the buffing machine I was able to get a mirror finish on most of my tools. I was super happy with how they turned out!