File Length: 5-1/2(140mm), Diamond Coated Surface: 1(25mm), Avg. 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 tip of the steel shank for superior removal of materials such as hardened steel, carbide, titanium, stone, glass and tile. PVC dipped handles provide excellent grip, ideal for sculpting, shaping and cleaning and cleaning glass, ceramics, metal and hardwood or jewelry. Set of 10 assorted needle files for mini diamond gun Feature: Sharp diamond needle file, high strength, good physical properties and wear resistance. No rust material with very comfortable soft vinyl handles 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 used in a variety of molds, models, parts, crafts and other industries. Specification: File length: 5-1/2(140mm) Diamond coated area: 1 (25mm) Average shaft diameter. : 1/8(3mm) State of the file head: diamond coating Body material: alloy Content: 10 x Diamond Files