Bi-Metal Holesaw Set 19mm 22mm 29mm 38mm 44mm 57mm Plumbers Hole Cutter Saw Tool

Variable pitch holesaws in bi-metal construction.
Hardened HSS teeth, flexible high carbon steel backing. 
Used for cast iron, stainless and steel, bronze, copper, PVC, alloyed and non-alloyed aluminum, acrylic and wood. 
Contents: 19, 22, 29, 38, 44 and 57mm holesaws. 
Includes 2 arbors and mandrel adapter 19-57mm.