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Fulton 6″ & 10″ Forstner Bit Extension Set – Heavy Duty Steel 3/8 Drill Bit Extension, Adds Up to 8-1/2″ Drilling Depth to Forstner Bits for Woodturning, Furniture & Carpentry

What people love (and don’t love)

What people love

  • High quality and heavy-duty steel construction for durability.
  • Effectively extends drilling depth, ideal for deep woodturning and carpentry projects.
  • Fits well with 3/8″ Forstner bits and holds bits securely in place.
  • Good value for the price with fast delivery.
  • Works straight and sturdy for precise drilling.

What people don’t love

  • Set screws can loosen over time, causing the bit to get stuck and difficult removal.
  • Included Allen wrench does not fit the set screws; a 7/64″ wrench is needed instead.
  • Some bits may need grinding to fit properly in the extension.
  • Precision milling could be improved for a better fit.

Solidly built and effective Forstner bit extensions with minor set screw and fitting issues.

Summary based on customer review evidence.

Quick facts

  • Brand: ‎Fulton Woodworking Tools
  • Price: USD 22.86
  • Rating: 4.40 (2349 reviews)

If you’ve ever needed a clean Forstner hole deeper than your bit can comfortably reach, the Fulton 6" & 10" Forstner Bit Extension Set is an easy upgrade for your woodworking kit. The 6" extension adds over 5-5/8" of additional drilling depth, while the 10" extension adds over 8"—making it useful for deeper bores in projects like furniture parts, vessels, pepper mills, and runs for wiring.

Both extensions feature precision-machined chucks sized for 3/8" shank Forstner bits, aiming for a tight, stable fit when you’re pushing deeper into the workpiece. The extensions are made from solid machined steel (alloy steel) with an uncoated finish and are intended for use on wood.

Designed for versatility, this set can be used with drill presses, lathes equipped with drill chucks, and power drills. (Forstner bits and machinery are not included.)

  • Two-piece set includes 6" and 10" extensions for added reach
  • Adds over 5-5/8" (6") or over 8" (10") of drilling depth for deeper bores
  • Precision-machined chucks accept 3/8" shank Forstner bits for a secure, stable fit
  • Solid machined alloy steel construction for durability in woodworking and construction use
  • Works with drill presses, lathes with drill chucks, and power drills (bits/tools not included)