DEWALT Quick Change Hole Saw Arbor, 1/2 in.

Quick Change: Mechanism engages and releases saws without additional tools or fasteners
Smooth Drilling: 135° Split point pilot bit easily penetrates steel and minimizes walking
Convenient Bit Change: Design enables adjusting or replacing the pilot bit without removing the saw
Durable Construction: Hardened steel for commercial applications
Use for nail embedded wood, metal, wood, drywall, plastic

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