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XtremepowerUS3 3 Pieces Auger Extension Drill Bits (8", 12", 20" Length) Extension Earth Ice Auger Extension Set Post Hole Digger Replacement Compatible to 3/4" Shaft

  • Based on 773 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Mar 9
Order within 19 hours and 18 minutes
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Size: 8", 12", 20" Set


Features

  • Need to drill deeper with your power auger? This auger extension allows you to drill holes at the maximum depth to get even tougher outdoor jobs around the farm or ranch done quickly and easily.
  • Extension fits between powerhead and auger. The earth auger extension bits fits between engine power head and auger, compatible to any 3/4" Shaft
  • Compatible to 3/4" Shaft; Output shafts to heavy wall tubing to increase strength and reduce weight.
  • Die Cast construction material. Mounting hardware included to ensure the auger extension easy to connect, save your time and effort
  • Package Includes 3 Sizes: 8", 12", 20" inch in length extension bit

Material: Mixed


Finish Type: Black


Shank Type: Straight


Brand: XtremepowerUS


Item dimensions L x W x H: 13 x 12 x 9 inches


Material: Mixed


Finish Type: Black


Shank Type: Straight


Brand: XtremepowerUS


Item dimensions L x W x H: 13 x 12 x 9 inches


Tool Flute Type: Straight


Surface Recommendation: Metal


Number of Flutes: 2


UPC: 608939653146


Unit Count: 3.0 Count


Manufacturer: XtremepowerUS


Number of Pieces: 3


Product Dimensions: 13 x 12 x 9 inches


Item Weight: 5.55 pounds


Item model number: 81105


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Mar 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews


  • Set works with Ryobi auger
Size: 8", 12", 20" Set
These auger extensions fit on the Ryobi 40V earth auger. They are a tight fit which what you want in a power screw application. Set comes with extra shear pins and cotter pins. Functionally, no issues with those. They're so small when apart, they could easily be lost. I'd recommend a set that are wired together. ... show more
Reviewed in the United States on March 29, 2025 by NYLawnDaddy

  • Excellency.
Size: 8", 12", 20" Set
Excellent product.
Reviewed in the United States on October 25, 2025 by Clint Mighty

  • Not for EGO's Earth Auger!
Size: 8", 12", 20" Set
I received the three piece auger extensions on time and in good condition. Unfortunately, these extensions shaft bores were to small at 3/4 inch to fit the EGO's Earth Auger 7/8 inch shaft. This is no fault of the seller. I was mislead by Amazon's accessory 'Customer also bought' that these bits would fit the EGO Earth Auger. I also blame the lack of description of the shaft size in the specifications for the EGO Earth Auger which I also purchase from Amazon. In conclusion, I returned the extensions and received an instant refund upon the drop-off at a UPS store for the return shipment. ... show more
Reviewed in the United States on May 5, 2025 by Amazon Customer

  • Good idea, mostly well done
Size: 8", 12", 20" Set
Of the four tubes, three were great. One had too much paint on the mail end of the joint to use before i scraped it off.
Reviewed in the United States on April 25, 2025 by Neal A.

  • Extenders
Size: 8", 12", 20" Set
Great addition to anyone who has a gas post hole digger .
Reviewed in the United States on July 29, 2025 by Randy Belland

  • Works as advertised
Size: 8", 12", 20" Set
Extension set for augers. Works as expected.
Reviewed in the United States on July 1, 2024 by nelso171

  • Almost a required accessory for serious post hole digging...
Size: 8", 12", 20" Set
These extensions make it very easy to dig an adequate post hole for the standard 8' post. The powerhead with a standard auger attached will take you down to approximately 28-30", depending on how close you get the powerhead to the soil level. As suggested in the operator's manual for the Xtremepower one-man auger, it is best to use the standard auger to bore the hole, then add the required extension to dig the hole to full depth and make a second pass. A word of advice, use the SHORTEST extension that will do the job. I initially used the 12" extension to go to full depth, but you can get a tremendous amount of extra soil weight and friction by doing this. The 8" extension did the job just fine, with much less "weight lifting". They seem well enough made, and come with a pin and cotter key (which I immediately swapped out for a hitch pin clip). These extensions make your auger much more useful, for a reasonable price. ... show more
Reviewed in the United States on May 8, 2016 by Don From Kansas

  • good stuff
Size: 8", 12", 20" Set
did the job
Reviewed in the United States on May 26, 2025 by brian moore

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