Pin vise device diamond coated bead hole cleaner. Mandrel holder, bead hole cleaner and dresser. The pin vise is made of aluminum and is 1/2" in diameter. It can hold your mandrels while you make beads as well. Inside the handle are three diamond bits. One is a dressing tool, 5mm in length and 4mm wide, it's a tapered point for cleaning up bead holes.
The second bit is a pointed bead hole cleaning tool. The pointed end is about 1/2mm in diameter and the base is 1mm in diameter.
The third bit is a pointed bead hole cleaning tool, about 3/4mm in diameter and the base is 3mm in diameter.