Fiberglass Pen Replacement Brush Head Watch Repair Tool, Brush Head

1. Nylon and fiberglass brushes are soft and flexible, suitable for cleaning jewelry, watches and coins
2. Insulated, can safely clean battery-powered devices
3. Can be used for a variety of purposes, pen brush removes rust and corrosion
4. Multi-function: suitable for circuit board cleaning, car rust removal, watch polishing, removing dirt and rust, removing car debris and scratches, etc.
5. It is recommended to turn it to a length of about 5mm for more convenient use
6. Note: only replacement head, not pen included