Mirka Denibbing File
Two denibbing files in one!
The ergonomically-designed handle is easy to grasp, and uses a strong magnet to hold a two-sided file in place. One side is coarse-cut, and the other is fine-cut.
If you've never needed one of these before, good for you! Should the time come when you need to remove a run or sag and need a denibbing file, you'll wonder why you didn't get THIS one when you had the chance!