Bosch 1x CYL-3 Concrete Drill Bit (for Concrete, Stone, Masonry, 8 x 80 x 120 mm, d 7,2 mm, Professional Accessory for Rotary Drills and Impact Drivers from Most Brands)

EZARC Countersink Drill Bit Set, 12PCS Counter Sink Drill Bits for Wood | 2-Flute, Titanium-Coated HSS, #4, #6, #8, #10, #12, Magnetic Extension Adjustable bit Holder, 1/4" Hex Shank, Storage Case View on Amazon