Hole Saw, Primary Material Application General Purpose, Materials Aluminum, Brass, Bronze, Plastic, Stainless Steel, Steel, Arbor Design Arbor Not Included, Tooth Material Cobalt 8, Saw Dia. 8 1/4 in, Teeth per Inch 5, Max. Cutting Depth 38 mm, Impact Rated Not Impact Rated, Thread Size 5/8 In.