High cutting rigidity(higher than HRC60) High wearable and high efficiency No dust pollution ISO Standard /America Standard /DIN Standard 1. Commodity: carbide rotary burrs 2. Material: hard alloy (YG8) 3. Standard: ISO7755, American Standard, DIN etc 4. Surface treatment : titanizing or according to customers' demand 5. Single cut: ---right hand spiral flute ---general purpose use on cast iron, steel, copper and brass alloys ---designed for rapid removal stock and excellent surface finishes 6. Double cut ---right and left hand flutes combined to produce super smooth finishes ---slight left hand cutting action gives excellent control of the burr and grinder 7. they are all made of YG8(equals to K30 as to International Standard) 8. others are accepted for all kinds of non-standard/standard shape of carbide rotary cutting tools as to customers' requirement 9. they are all can put in one box as to customers' requirement