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10' Forstner Bit and Hole Saw Extension, 3/8' Round Shank – Increases Drilling Depth by 8-3/4', Ideal for Woodworking and Deep Bore Applications

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$16.89

$ 8 .99 $8.99

In Stock

About this item

  • Extended Reach – Add up to 8" of extra drilling depth with the Forstner bit extension, making it perfect for deep hole projects, such as turning large vessels or vases.
  • Versatile Compatibility – Works with 3/8" or smaller round shank Forstner bits, and is compatible with most drill types, including hand drills, lathes, and drilling machines.
  • Durable Construction – Made from high-carbon steel, this extension offers exceptional strength and resistance to wear, ensuring longevity and reliability in tough working conditions.
  • Secure Fit – Features two set screws that firmly grip the shank of your Forstner bit, reducing torque loss and ensuring a stable, precise drilling experience.
  • Easy to Use – Quick and simple installation with the included hex key. Adjust the set screw, insert the drill rod, and you're ready to drill in no time.



Product Description

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Mr. A. C. Clark
Reviewed in the United States on March 30, 2025
The construction feels great - decent amount of weight to it makes me feel like it was built with some decent steel and my forstner bits fit well but not too snugly (I have had problems with other extensions where I had a hard time removing the bit after some prolonged use). Unfortunately I'm fairly sure it's not totally straight - I used it at first on my lathe and noticed an undue amount of chatter so I switched out the bit and tried it in a hand drill but noticed the same bit of blur/wobble from the tip of the bit at certain speeds. It's good for the price, but I wouldn't use it for anything other than rough-hollowing on a lathe, definitely not for precision work.
The Goode Life Outdoors
Reviewed in the United States on March 22, 2025
This is a nice, straight extension for drilling deep holes in your lathe project. Easy to set up, it holds a variety of bit sizes securely and in-line with the center. Adjustments are simple, and the hex end which attaches to the chuck locks in well once tightened.
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