Hole Saw Primary Material Application General Purpose Materials Cut Metal Plastics and Composites Sheet Metal Wood Arbor Design Not Included Tooth Material Bi-Metal Saw Dia 7/8 in Teeth per Inch 4/6 Max Cutting Depth 1 1/2 in Impact Rated No Thread Size 1/2 In.-20 Shank Size 1/4 in Hex 3/8 in Hex 7/16 in Hex Pilot Drill Size 1/4 in dia x 4 in L