Hole Saw, Saw Dia 2 1/16 In, M3 High Speed Steel Cutting Edge with Hardened Steel Backer, Max Cutting Depth 1 1/2 In, Teeth Postive Rake Variable Pitch, Teeth per Inch 4/6, Arbor Built In, Arbor Size 7/16 In Hex, Pilot Drill G1548434, Drill Size Not Included, Cuts Wood, Plastic, or Machinable Metal