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Universal borers from Stubai are an improved version of a forstner bit. They offer fast clearing, large chip gates and are somewhat easier to hone and sharpen. The whole raker face and the perimeter nickers can be polished with a slip stone. Universal borers will succesfully drill deeper, clean holes without binding. They are available in super sharp tool steel and durable TCT for work with melamine faced man-made sheetstock.