File Length: 5-1/2"(140mm), Diamond Coated Surface: 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 and oddly shaped objects. Ultra-hard industrial diamonds permanently embedded in the steel shank tip for superior material removal on materials such as hardened steel, carbide, titanium, stone, glass and tile. PVC dipped handles provide excellent grip, ideal for carving, shaping and cleaning glass, ceramic, metal and hardwood or jewelry. Set of 10 Assorted Mini Diamond Needle Files Feature: Sharp diamond needle file, high strength, good physical properties and wear resistance. No rust material with soft vinyl handles very comfortable for continuous use. The file base is made of bearing steel with diamond coated file tips for long-lasting durability. Ideal for carving glass, ceramic, metal, hardwood or jewelry. Widely