Designed for professionals and DIY enthusiasts. Includes 6 common shapes: Dome-shaped cylinder, rounded shaft, concave arc with ball point, cone, cylinder, inverted cone. Dual chamber is more suitable for materials with relatively low density. Universal size 6mm shank, compatible with all electric and cordless drills, pneumatic tools, grinders and other rotary tools. Durable and reliable Machining hardness reach up to HRA85. Can replace a small grinding wheel for most jobs, without creating dust pollution. Processing all kinds of metals (including all kinds of hardened steel) and non-metallic materials (such as marble, bone, jade). Use on drills, presses, lathes, hand-held electric or pneumatic devices or flexible shaft. Can replace a small grinding wheel for most jobs, without creating dust pollution. Safe and reliable, can reduce labor intensity.Features:Material: Bearing steelShank size: 6mm round shankFeature:Rotary burr, good for your wood carving, drilling and engraving, professional tools.Can also grind marble, jade and other non-metallic materials.Petiolate can basically replace the small wheel, there is no dust pollution.The grinding efficiency is increased up to 10 times better than hand files and petiolate grinding wheels.The processing is high quality and smooth and can be all kinds of high precision shapes.Safe, reliable and convenient to use.Long service life: more than 200 times the wheel.Uses: Clean burrs and burrs during casting, forging, welding, etc. mechanical boring surfaces.Safety Tips:The cutting direction should move from right to left smoothly, do not cut back and forth like using the wheel, be careful not to use too much force (the pressure generally does not exceed 4 kg).Note:1. The product is very sharp, please stay away from children.2. The size is measured manually and there may be an error of 0-3 mm, which is normal.3. Due to differences between different displays, the image may not reflect the actual color of the project.Package Included:6pcs Rotary Burr"