Hole Saw, Primary Material Application General Purpose, Materials Cut Metal, Plastics and Composites, Sheet Metal, Wood, Arbor Design Arbor Not Included, Tooth Material Bi-Metal, Saw Dia. 2 1/4 in, Teeth per Inch 4/6, Max. Cutting Depth 1 1/2 in, Impact Rated Not Impact Rated, Thread Size 5/8 In. -18, Shank Size Not Applicable, Pilot Drill Size 1/4 in x 3 in L, 1/4 in x 4 in L