Rotary Milling Cutter, Tapered Tip, Single Cut, Length 22.2mm, Thickness 12.7mm, Alloy Steel. Designed for professionals and DIY enthusiasts. . Includes 6 common shapes: Dome-shaped cylinder, rounded shaft, ball-tipped concave arc, cone, cylinder, inverted cone. . Double chamber is more suitable for materials with relatively low density. . Universal size 6mm shaft, compatible with all electric and cordless drills, pneumatic tools, grinders and other rotary tools. Durable and reliable. Machining hardness reaches up to HRA85. Can replace a small grinding wheel in most jobs without generating dust. . Processing all kinds of metals (including all kinds of hardened steel) and non-metallic materials (such as marble, bone, jade). For use on drills, presses, lathes, electric or pneumatic equipment, manual or flexible shaft. Can replace a small grinding wheel in most work without generating dust. Safe and reliable, can reduce labor intensity. .