Features: Brand new and high quality High-quality Material: Made of #45 Carbon Steel with diamond sand coated to enhance the cutting efficiency and wear off resistance, long-lasting for use. Diamond File Set: 10 Pcs Different Shapes (Shank Diameter: 3mm/0.118 "; Length: 140mm/5.5") designed for hard-to-reach & odd-shaped objects. Perfect Design: Soft Non-slip PVC Rubber Grips, effectively reducing the pressure on your hand while using, more convenient for operation. Widely Usage: Diamond Needle Files are ideal for Glass, Ceramic, Metal, and Hard Wood or Jewelry Carving, shaping and material removal, and cleaning. Best Choice for You: Professional and hobbies use precision needle files; Small diamond needle files for craft and delicate applications. Specifications: Name: Diamond file, diamond irregular file, alloy file, diamond file Material: Diamond Specification: approx. 3x140mm Shape: crescent shaped circular knife shaped curved file with various shapes Package Includes: 1Set x Needle Files note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.