Machinable materials: cast iron, cast steel, bearing steel, high carbon steel, chrome-nickel alloy, bronze, brass and other metals or tile, marble, jade bone and other non-metallic.High efficiency, high-quality finish, long service life, good economic returns.Easy to use, safe and reliable, can reduce labor intensity.Mechanical parts chamfering, rounding and groove processing.Dual Chamber is crossover lines, not easy to block the lines, more suitable for the object of relatively low density material.8pc Long Reach Double Cut Carbide Rotary Burr SetGreat for High Performance Engine Work1/4 inch Shank and 6 inch LengthColour:silverMaterial:AlloySize:150-160mmPackage Contents:8xMilling cutterOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.