A high quality pin vice with an adjustable 3-jaw chuck able to hold drills form 0.1 to 2.5mm diameter.
Fitted with a swiviel head to fit easily into the palm of the hand the 3 jaw chuck avoids the need to change colletts to use different size drills and can also hoold de-burring tools, abrasive brushes and polishing tools with 2.35mm shafts.