Diablo DSF1125 is a 1-1/8" SPEEDemon 2-cutter self-feed bit.
Self-feed bits bore large, clean holes through studs, joists and plates, a daily task for plumbers running drain, vent and supply lines and for electricians and HVAC techs routing conduit or line sets. The threaded feed screw pulls the bit through the wood, and the two cutters shave a 1-1/8" hole.
Size the bit to the outside diameter of the pipe or fitting you are passing through, plus clearance. Use a heavy-duty drill with a side handle and a clutch, as large self-feed bits produce high torque.
Specifications
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Brand: Diablo
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Manufacturer Part #: DSF1125
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Product Line: SPEEDemon
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Type: Self-feed bit
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Diameter: 1-1/8"
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Cutters: 2
See also: Self-Feed & Switchblade Bits, Flat Boring Bits, Hole Saws, Diablo.