Beadsmith Micro Engraver Replacement Tips  MICR01-Tip

Ideal for Engraving Metal, Glass, Wood, Ceramics, and More!

To Install a new bit:  Select a bit based on the thickness of line you want to make, then insert the flat end into the opening of the chuck (about 1/4 inch).  Next, insert the Allen key into the screw on the side of the chuck and tighten the screw until it holds the bit firmly in place.