Diablo 18" x 7/16" Universal Extension for Drills

The Diablo DHS500XT18 18" x 7/16" universal extension is built for professionals who need reliable performance when drilling or cutting in deep, hard-to-reach spaces. This 7/16 extension is made for heavy-duty use with hole saws and drill bits, offering a secure fit, long reach, and consistent control during operation.

Made for electricians, plumbers, HVAC pros, and contractors, this hole saw drill bit extension works seamlessly with standard hole saw arbors. Whether you're cutting through studs, joists, or panels, the DHS500XT18 ensures you get the job done efficiently without sacrificing stability or precision.

• 18-Inch Reach



Extends your drilling range for accessing difficult, recessed, or overhead areas.




• 7/16" Hex Shank Compatibility



Fits hole saw arbors and bits requiring a 7/16 extension.




• Rugged Construction



Made from industrial-grade steel for high torque and heavy-duty use.




• Tight Bit Retention



Minimizes wobble and ensures a stable, accurate drilling experience.




• Ideal for Hole Saw Applications



Perfect extension for hole saw drilling in framing, retrofits, and utility work.