Hole Saw, Primary Material Application General Purpose, Materials Cut Brick, Clean Wood, Concrete Block, Fiber Cement, Nail Embedded Wood, Arbor Design Arbor Not Included, Tooth Material Carbide Tipped, Saw Dia. 2 1/4 in, Teeth per Inch Not Applicable, Number of Teeth (Hole Cutters Only) 3, Max. Cutting Depth 2 7/16 in, Impact Rated Not Impact Rated, Thread Size 5/8 In.-18, Shank Size 1/4 in, Pilot Drill Size 1/4 in dia x 3 3/4 in L, 3/8 in dia x 3 3/4 in L