Drilax Heavy Duty Wet and Dry Use 2-1/2 inch Diamond Hole Saw Drill Core Bit for Brick, Concrete Block, Masonry 2 inches Depth of Cut - 3/8 inch Standard Shank DrilaxHD010065 :
Milwaukee Tool 2-1/2 -Inch Hole Dozer Bi-Metal Hole Saw with 3/8 -Inch Arbor & Pilot Bit | The Home Depot Canada
5PC HOLE SAW SET DRILL BIT CUTTING CUTTER CIRCULAR,1-1/4", 1-1 /2",2",2-1/8" | eBay
Craftsman Hole Saw with Pilot Bit - 1 1/2-in Dia - Bi-Metal - Arboured - White CMAH1112A | RONA
ASNOMY 14Pcs TCT Hole Saw Kit, 12.7-54mm(1/2"-2-1/8") Tungsten Carbide Tipped Hole Cutters Set Heavy Duty Hole Saw for Metal Stainless Steel Iron Wood Plastic, with Extra 2pcs Pilot Drill Bits : Amazon.co.uk:
Starrett Diamond Grit Hole Saw 57mm 2 1/4"
Dribotway 38mm 1-1/2'' Hole Saw, Bi-Metal Hole Saw Drill Bit High Speed Steel, Cutting Circular Holes, for Wood and Metal, Can Easily Drill Wood, Plastic, Plywood, Thin Metal : Amazon.co.uk: DIY &
14-Piece General Purpose 3/4" to 2-1/2" Set Bi-Metal Hole Saw with Case High Speed Steel (HSS) - China Hole Saw Kit and Hole Saw Cutter
HYCHIKA 6 inch Bi-Metal Hole Saw with 1/2 in. Arbor and Pilot Bit | eBay