The Milwaukee 7/8" One-Piece Carbide Hole Cutter (Model 49-57-8609) is built for professional electricians and contractors who demand clean, repeatable cuts through stainless steel, mild steel, sheet metal, and duct on the job site. The carbide-tipped teeth deliver extended tool life compared to standard bi-metal cutters, while the stop-shoulder design limits each cut to a precise 3/16" depth — eliminating over-drilling and protecting your work surface. A spring-loaded pilot bit ejects the plug automatically for fast, uninterrupted workflow, and the 3-flat shank locks securely into any 3/8" drill/driver for maximum torque transfer. Whether you're roughing in conduit knockouts, punching holes in electrical enclosures, or working through heavy-gauge duct, this one-piece cutter holds up cut after cut.

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