uxcell 6.7mm Drilling Dia Straight Shank High Speed Steel Cobalt Metric Twist Drill Bit for Hardened Metal, Stainless Steel, Cast Iron and Plastic 2pcs: Amazon.com: Tools & Home Improvement
M8 x 1.25 Spiral Point Tap 6.7mm Drill Bit Set Cobalt High Speed Steel (HSS-CO) | eBay
IIVVERR 6.7mm Straight drill hole 9mm Split Point Tip HSS Twist Drill Bit (Broca de punta dividida HSS de 6 'con vástago recto de 6,7 mm Broca helicoidal HSS - Amazon.com
6.7mm x 80mm - Triple Flute Tungsten Carbide Spot Weld Bit - For High Strength Steel Boron (HSSB) | Spot Weld | Drill Bits | Drilling | Abrasives/Cutting/Drilling | Wurth USA