Hole Saw, Primary Material Application Drywall; Metal; Plastic; Wood, Arbor Design Arbor Not Included, Tooth Material Bi-Metal, Saw Dia. 1 7/8 in, Teeth per Inch 5, Number of Teeth (Hole Cutters Only) 5 Teeth Per Inch, Max. Cutting Depth 1 3/4 in, Replacement Arbor Mfr. No. HBT187, Thread Size Not Applicable, Shank Size 1/4 in, Pilot Drill Size 1 7/8 in dia. x 1 1/8 in L