【Long Shank Carbide Burr】 Also called long reach carbide burr, carbide bur long shank refers a precise cutting tool of many materials. The specially designed carbide burr extended length can reach positions that ordinary shank burr bits can’t reach. We use it commonly in cutting, grinding, deburring, etc. 【Single Cut or Double Cut】 Rotary file single cut provides a right-up cut and removes materials aggressively. It's designed for cast iron, steel, some copper and brass, and other ferrous materials. Carbide burr double cut creates the smallest chips, ideal for smooth grinding, polishing, etc. It's for aluminium, soft steel and also for all non-metal materials such as stone, plastics, hard wood and ceramic. 【What to Cut】 The rotary rasp can meet most demanding tasks even in hot conditions. With extreme strength, hardness, and high density, It can cut, mill or carve stone, bone, wood, plastic, metal etc. 【Widly Used】 Carbide burr set is widely used for metalwork, tool making, model engineering, wood carving, jewelry making, surgical grinding, welding, chamfering, die casting, deburring, finishing, grinding hard metals and alloy steel materials, cylinder head porting and sculpting. 【Working Speed】 The speed at which you use your carbide burr long shank in your rotary tool will depend on the material you’re using it on. If the burs are chipping easily this could be due to the speed being too slow. It’s ideal to start the bur off slow, increasing the speed as you go along. And we recommend rotary long shank die grinder bits that have a lower speed than a standard shank. › See more product details