$51.99 MORSE 1/2-Dia. Hole Saw for Masonry, 1/2 Max. Cutting Depth, Continuous Grit Teeth per Inch 
Milwaukee 1-1/2 in. Hole Dozer Hole Saw with Arbor-49-56-9665 - The Home Depot
Lenox Speed Slot 1772425 Hole Saw, 1/2 in Arbor, 1-1/2 in D Cutting, M2 HSS Cutting Edge 
