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 objects. reach and oddly shaped. 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 carving, shaping and cleaning and cleaning glass, ceramic, metal and hardwood or jewelry. 10 Assorted Mini Diamond Gun Needle File Set Feature: File sharp diamond needle, high strength, good physical properties and wear resistance. No rust material with very comfortable soft vinyl handles for continuous use. Base of file is 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) File Head Condition: Diamond Coating Body Material: Alloy Content: 10 x Diamond Files