Diamond Finger bit is a kind of milling cutter.It is fixed on machine and circumvolve speedily by the drive of principal axis after drilling, At the same time, it is brought to bear some power and mills stone in the some direction as obey. After milling, the stone can be made into table-board through grinding with router bit. Usually, finger bits joint is GAS 1/2â³.Main types of finger bits we produce: sintered finger bit with continuum rim (with holes), sintered segmented finger bits with bearingÏ20X25,Ï20X25Ï20X35,Ï20X40,Ï20X45,Ï20X50,Ï20X60,Ï24X25,Ï24X35,Ï24X40 Ï24X45,Ï24X50,Ï24X60,Ï25X25,Ï25X35,Ï25X40,Ï25X45,Ï25X50,Ï25X60etc, special sizes are available upon clients requests.