Set 3 cylindrical diamond wheels, with the diamond cylindrical minimuels, it is possible to perform fine work of sanding holes, radios, contours and edges. the set contains three minimuels with diameters of ø4, 4,8 and 5.5 mm. with their diamond coating, they are perfect for machining hard materials, such as ceramic, glass, tile and non-ferrous metals, and convince thanks to their high dimensional stability and long service life. with their 3 mm shank, the diamond mini-drills can be easily mounted on drills, cordless screwdrivers, flexible shafts and mini grinders