6 BIG Diamond Burrs 1/4 Mandrel Drill Bits -- Heavy Machinery Tool

6 TOUGH Diamond Burrs (80 Grits) Set This set is ideal for grinding, cleaning, cutting, polishing, etc The bits are coated with tough diamond particle This product is perfect for jewelers, hobby & craft, modelers, and other professions This set will last a long time, and you won't be disappointed You will receive 6 different types of these tough bits The mandrels size is 1/4 *check make sure that your machine is compatible* The overall length is 2 1/2 The head size is 1/2 They come in a protective storage case as pictured NOTE: Pictures are for illustration purpose only, actual item may slightly vary in appearance and design