Edge Magic™ New MADE IN USA, “Edge Magic™” Diamond de burring stone. Exclusive, new size nicely contours to both straight and bent blades and can be comfortably used vertically or horizontally. This stones performance is effected by sharpening remnants less than any other stone currently available. The “Zero Clog” design works well both dry or with your favorite oil/lube. Full metal matrix for long groove free life. Available in coarse, fine, or extra fine grits.