The Greenlee Nail Eater® Extreme (Model 66PT-1) is a full-length 1" x 18" auger bit engineered for electricians and contractors who need maximum reach for deep drilling through multiple wood members, beams, and structural assemblies on the job site. Its patented cutting angle delivers smoother starts and reduced cutting loads, while the self-feeding screw point drives the bit through wood and nails with 30% longer cutting edge life than standard bits. Constructed from super tough, heat-treated steel with a 7/16" hex shank, it’s the professional’s choice for large-diameter, deep-bore rough-in wiring applications.

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