- Cylindrical-shaped engraving bit with diamond coating for high-precision work - 1.6mm diameter x 4.0mm head, ideal for fine details on metal, glass, stone, ceramic, plastic, and PCB - 2.35mm stainless steel shaft ensures strength and stability during use - Compatible with MT320120, 320130, 320600, 320800, and 320801 devices, making it easy to integrate into modeling tools - Perfect for sculpture, crafts, modeling, and professional engraving work - Silver finish provides durability and a professional appearance - Essential tool for modeling and sculpture enthusiasts and professionals