Hole Saw, Arbor Design Arbor Not Included, Tooth Material Bi-Metal, Saw Dia. 2 1/2 in, Teeth per Inch 4/5, Max. Cutting Depth 1 7/8 in, Impact Rated Not Impact Rated, Thread Size 5/8 In.-18, Shank Size 1/2 in, Pilot Drill Size 1/4 in dia x 3 1/4 in L