File Length: 5-1/2" (140mm), Diamond Coated Area: 1" (25mm), Average Shaft Dia. : 1/8" (3mm)10Pcs Assorted industrial diamond coated head shapes: Hook, flat hook, square hook, circle, flat/convex angle and more.High-quality diamond file set designed for hard-to-reach & odd-shaped objects.Ultra-hard industrial diamonds permanently embedded in steel shaft tip for superior materials removal like hardened steel, carbide, titanium, stone, glass & tile.PVC-dipped handles provide excellent grip, ideal for Glass, Ceramic, Metal, and Hard Wood or Jewelry Carving, shaping and material removal and cleaning.10 Pcs Assorted Mini Diamond Rifler Needle File SetFeature:Diamond needle file that is sharp, high strength, good physical properties and wear resistance.No rust material with Very comfortable soft vinyl handles for continuous use.File base is made of Bearing Steel with Diamond Coated file tips for long lasting durability.Great for Glass, Ceramic, Metal, and Hard Wood or Jewelry Carving.Widely used in a variety of molds, models, parts, handicrafts and other industries.Specification:File Length: 5-1/2" (140mm)Diamond Coated Area: 1" (25mm)Average Shaft Dia. : 1/8" (3mm)File Head Condition: Diamond CoatedBody Material: AlloyPackage Included:10 x Diamond Files