June Sales

Get an extra 2-1/2 Zoom

Forstner Bit Extender

Item #: 32937
Oversold until 10/04/2018
Reserve Yours Today
Sign up for price alert Add to Wishlist Find in Store


Get an extra 2-1/2" of reach into deep holes with this Forstner bit extender. Great for rustic furniture and joining wide timbers. Also works with any other style of 3/8" shank drill bit greater than 1" in diameter. Forstner bit sold separately.

  • Works with 1" diameter bits or larger, smaller bits will not allow extender to enter the hole
  • 3/8" shank with triangular flats for positive grip
  • 2 hex-head screws securely grip drill bit
  • Socket for drill bit accepts 3/8" shank bit, and extends 1-1/2" into extender
  • Total shank measures: 2-3/16" long - flattened triangular section: 1-1/2" long

What's included

(1) Forstner Bit Extender

Technical Details

  • Length: 4"
  • Width: 3/4" at Widest Section
  • Brand: Insty-Bit
  • Manufacturer Part Number: 4" EXTENDER
  • Weight (lbs): 0.2600