Hole Saw Arbors & Pilot Drill Bits
Hole saw arbors and pilot drill bits attach to hole saws. Arbors attach to a hole saw so it can be held in a drill. An arbor can be used with hole saws of a compatible size and thread. Pilot bits attach to the arbor inside the hole saw. They drill a starter hole to prevent the hole saw from walking when it starts cutting. Pilot bits are changed when they are worn or damaged.