CONVENIENT BIT CHANGE: Design enables adjusting or replacing the pilot bit without removing the saw DURABLE CONSTRUCTION: Hardened steel for commercial applications IMPACT READY : Hex shank design for use in an impact drill. Featured only on the DWT-DAH9141PBM These Hole Saw Arbors feature hardened steel for commercial applications and a 135 split point pilot bit to easily penetrate metal. It is designed to enable adjusting or replacing pilot bits without removing the hole saw.
