12 PCS,1/4", HSS Black and Gold Coated Twist Drill Bits, Metal Drill, Ideal for Drilling on mild Steel, Copper, Aluminum, Zinc Alloy etc. Pack in Plastic Bag - - Amazon.com
HSSE Co5 conical and deburring countersink 90 ° dia. 25 mm shank dia. 10 mm DIN 335 C
Amazon.com: Mueller-Kueps 244 210 10 x 90 mm Long HSSE Spot Weld Drill : Everything Else