Hole Saw Kit Primary Material Application General Purpose Materials Cut Brass Arbor Design Included Tooth Material High Speed Steel Max Cutting Depth 38 mm Number of Hole Saws 9 Saw Size Range 3/4 in to 2 1/2 in Hole Saw Sizes (Hole Saws) 3/4 in 7/8 in 1 1/8 in 1 3/8 in 1 1/2 in 1 3/4 in 2 in 2 1/2 in Thread Size 1/2 In.-20 5/8 In.-18 Shank Size 7/16 in Hex 1/4 in Hex Pilot Drill Size 6.35 mm dia X 102 mm L Number of Pieces 11