Bosch HSA HS SpinLOCK Universal Hole Saw Arbor with High Speed Steel Pilot Bit Tool Free Change Carbide Burrs factory smooth bevel transitions across countertop factory smooth bevel transitions across countertop installations and cabinet fabrication without hand filing GearWrench 81298T 3 Piece 90 Tooth Extra Long Locking Flex Head Teardrop Ratchet Set Hole Saw Center Tracking: Anchoring the center guide position across various multi brand hole cutters natively to enforce strict drilling axis balance and accurate hole profiles Specification Value Brand Name Bosch Model Number HSA HS Product Classification Type Hole Saw Mandrel Quick Change Arbor Adapter Connection Shank Size Rating 3 8 in