Hole Saw Kit Primary Material Application Wood Materials Cut Aluminum Fiberglass Plastic Steel Tin Wood Arbor Design Not Included Tooth Material Bi-Metal Max Cutting Depth 1 5/8 in Impact Rated No Number of Hole Saws 4 Saw Size Range 2 1/2 in to 4 in Hole Saw Sizes (Hole Saws) 3 in 3 5/8 in 4 1/8 in 4 3/4 in Shank Size 1/2 in Hex Number of Pieces 6