Packout™ Hole Dozer™ Hole Saw Kit, 10 PiecesFeatures teeth with more steel behind the cutting edge for enhanced durability Equipped with plug jack, an all access slot design for fast plug removal Backed by RipGuard limited lifetime tooth break warranty Features bi metal construction with 8% cobalt for increased wear resistance Includes: (6) Bi Metal Hole Dozer hole saws (1 1 2", 2", 2 1 2", 3", 3 5 8", 4 1 4"), (2) 3 1 2" pilot bits, (2) Arbors (7 16" no wobble arbor, 3 8" hex shank arbor), (1)