Easy to handle and control, this micro engraver uses a diamond-tipped stainless steel bit to engrave almost any surface, wood, metal, ceramic and glass. The micro engraver has a contoured grip for comfort and control. I've tried other ways of signing my artwork and this tool has been the best fit so far which is why I wanted to offer it to everyone.  I know it works and lasts a long time + its under $20.  It makes signing your stained glass piece as easy as signing a piece of paper.
Contoured grip for comfort and control
Pen-type design fits in a shirt pocket or purse and goes anywhere
Precision-ground stainless steel bit with diamond point tip
 
IMPORTANT INFORMATION:
Requires 2 AAA batteries, included. This item can only be shipped within the 48 contiguous states via Standard Ground Shipping