Step bumper and mounting trailer 'ball'
I have a new pickup with a metal/crome step bumper. The flat top of the bumper has a rubber-like onlay, and it covers the hole in the metal that is there to take a trailer ball. It appears one just cuts the rubber away, to gain access to the hole.
Being this surface is very visible it would be best if one cut a very clean hole to maintain a clean appearance. Then too, the shoulder on the ball will cover any small roughness in the cut. Any advice on what to cut with?