General description CCYKXA 6pcs Double Cut Tungsten Rotary Burr Set is designed for both professionals and DIY enthusiasts. This set includes six common shapes of tungsten files suitable for filing, engraving, and grinding tasks. Technical specifications Shank Size: 6mm Length: 22.2mm Thickness: 12.7mm Material: Alloy Steel Machining Hardness: HRA85 Compatibility and accessories Compatible with all electric and cordless drills Works with air tools, grinders, and other rotary tools Usage Can replace small grinding wheels for most jobs Processes various metals, including hardened steel Suitable for non-metallic materials such as marble, bone, and jade Use on drills, presses, lathes, and hand-operated or flexible shaft electric or pneumatic devices Other information Safe and reliable, reduces labor intensity Dual chamber design is more suitable for materials with relatively low density