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
Mueller-Kueps 244 008 8 x 80 mm HSSE Spot Weld Drill Bit : Amazon.sg: Automotive
Amazon.com: ApplianPar Round HSS 3/8-24 UNF Tap and Die Set Left Hand Thread Plug : Industrial & Scientific