Amazon.com: HOHXEN M42 HSS Hole Saw, 115mm Heavy Duty Hole Saw Tooth Cutting Opener Drill Bit for Wood Aluminum Iron Sheet Pipe Plastic : Tools & Home Improvement
Bi-Metal Hole Saw Kit, SUNGATOR 18-Piece General Purpose 3/4" to 2-1/2" Set with Case. Durable High Speed Steel (HSS). Fast Cut Clean, Smooth and Precise Holes Through Metal, Wood, Plastic, Drywall. -
Milwaukee Hole Dozer Bi-Metal Hole Saw Kit w/SAWZALL Wood & Metal Cutting Bi-Metal Reciprocating Saw Blade Set (25-Piece) 49-22-4038-49-22-1110F - The Home Depot