Machined parts at work needed extra de-burring around holes where the CNC spindle couldn't reach, so we de-burred them by hand with a chamfer end mill.

However, the end mill is slippery in the hand and prevents you from getting enough force to deburr the holes in an easy manner. This little grip solves that issue. This grip is meant for CNC/hand tools with a 1/4" (.250 in) shank diameter