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hole saw 9pcs Cuts through stainless steel and other materials pipe,nail-embedded wood,hard wood floors,plywood and plastics. material: M3 bi-metal 6PC Hole Saws: 3/4” (19mm), 7/8” (22mm), 1-1/8” (29mm), 1-1/2” (38mm), 1-3/4” (44mm), 2-1/4” (57mm) 1PC Arbor: YF-10A-315 1PC Adapter: YF-10A-324 1PC Drill: YF-10A-325 Item No: YF-10A10 6PC Hole Saws: 7/8” (22mm), 1-1/8” (29mm), 1-3/8” (35mm), 1-3/4” (44mm), 2” (51mm), 2-1/2” (64mm) 1PC Arbor: YF-10A-315 1PC Adapter: YF-10A-324 1PC Drill: YF-10A-325