Hole Saw Kit, Primary Material Application Metal, Materials Brass, Arbor Design Arbor Not Included, Tooth Material Carbide Tipped, Teeth per Inch 2.5, Max. Cutting Depth 10 mm, Impact Rated Not Impact Rated, Number of Hole Saws 4, Saw Size Range 5/8 in to 1 1/4 in, Hole Saw Sizes (Hole Saws) 16 1/2 mm, 20 mm, 25 1/2 mm, 32 1/2 mm, Thread Size 3/8 In.- 63/64 In., 3/8 In.-1 17/64 In., 3/8 In.-19/32 In., 3/8 In.-25/32 In., Shank Size 1/4 in, Pilot Drill Size 6 mm dia X 52 mm L