... "2013-14682-11/16"1519/32"2013 -15702-3/4"165/8"2013 -16712-25/32"1711/16"2013 ... -27/32"1823/32"2013 -18732-7/8"193/4"2013 -19742-29/32"2025/32"2013 -20752-15 ... provide clearly cutting, fast feed rate, less vibration, smooth hole surface and long tool life, the effective of drilling ... : steel, copper, aluminum, stainless steel, plates or pipes;4. Weldon shank,One-touch shank,FEIN Quick-IN shank,Thread ...