It depends on how deep the damage is.

Removing a pit is a misnomer, you do not remove a pit, you remove all the surrounding hardened steel to the depth of the good steel at the bottom of the pit.

It can be hard to do with a Dremel and small drum, wire brush will not remove much steel. Unless you have some experience with a Dremel, it can be dangerous for the razor and you. Dremel spin at speeds up to 35,000 rpm, buffers 1,750-3,500. One slip and it can get away from you.

1-2K will get to near mirror, you can polish with any good metal polish from there.

Polishing is easy, the work is removing steel to the depth of damage.