VEVOR Core Drill Bit, 4" / 101.6 mm Diameter 5/8"-11 Threaded, 9.5" / 241.3 mm Depth Diamond Dry Coring Bore Tool with a Pilot Bit & 4.5" Blade, Masonry Hole Saw Bits for
Fisch FSF-176701 Brad Point Bit 11mm 3/8" Shank - Woodworkers Emporium
11/12/14mm Diamond Drill Bit Set | Glass House Store