Hole Saw Kits, Hole Cutter Kit, Max. Cutting Depth 1/8 in, Arbor Design Built-In Arbor, Tooth Material Carbide Tipped, Number of Teeth 4, Thread Size 3/8 In., Replacement Arbor No. Mfr. No. 645-011, Shank Size 3/8 in, Pilot Drill Size 5/8 in dia x 2 1/4 in L, Replacement Pilot Drill No. Mfr. No. 645-001, Application Metal Cutting, Includes Hex Key, Pilot Drill Bit, Plastic Carrying Case, Quick-Change Arbor