Ideal for decorative engraving the 9929 1/10" (2.54mm) Diamond Engraving Point is a replaceable bit for use with the 290 Dremel Engraver. Ideal for any arts and craft project, the Diamond Engraving Point is designed for hard-surface engraving applications to create fine lines to deep grooves in a variety of material including metal, plastic, glass, ceramic, wood and leather. The engraving bit is made of carbide and features a 1/32 Inch (0.8mm) tip.