Spyder 600637P Hex8 3/8" HSS Quick Change Hole Saw Arbor Assembly DCS374B general purpose (E-02559) is ideal

general purpose (E-02559) is ideal for cutting applications including block

or bricks and mortar

The 3-1/2 diameter raised panel bit has an ogee profile and a back-cutter which allows milling of the front and back of the panel in the same pass

hassle free wear

Spyder 600637P Hex8 3/8" HSS Quick Change Hole Saw Arbor Assembly DCS374B general purpose (E-02559) is idealSpyder's Rapid Core Eject arbor system to remove cores without prying drill hole, press button, pull back the hole saw, and eject the core up to 5x faster than standard hole saw arbors. Cut at an angle, and use two adapters (second adapter sold separately) on one pilot bit to enlarge existing holes. All Hex8 Spyder hole saws fit on Spyder Rapid Core Eject arbor pilot bits, or use your favorite hole saw (with a 5 8 18 thread) with the Spyder Rapid Core