The Micro 100 Engraving Tool Double End 16R852 is a double-ended carbide engraving tool with a 1/8" shank diameter. It has a 60 degree included angle and a 0.010" tip radius. The overall length is 2-1/2". It is designed for hand engraving in materials like plastics, soft metals, wood, and fiberglass. The double-ended design provides two cutting edges for extended tool life. Made in the USA from solid carbide, this high quality engraving tool is rigid and durable for precision engraving results.