5" Carbide Tipped Hole Saw

5" Carbide Tipped Hole Saws Carbide Tipped Hole Saws Dia: 5" Depth: 1-1/2" Arbors: 2L These carbide tipped hole saws have a tooth hardness of Ra 90-93. The carbide teeth are welded to the backing material at a 6*-7* positive rake, they also have a unique triple chip ground tooth formation at which there are 3 teeth per inch. This formation provides smoother, concentric cuts, as well aslonger life expectancy. Cuts materials that standard bi-metal hole saws will not.