XtremepowerUS 8-Inch Replacement Earth Auger Drill Bit, Heavy-Duty Spiral Post Hole Digger Attachment 3/4-Inch Shaft for Gas-Powered Augers, Fence Installation, Tree Planting, Landscaping & Gardening
Condition: New
$44.95
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Extended holiday returns
FREE refund/replacement until Jan 31, 2027 Learn more
FREE refund/replacement until Jan 31, 2027 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Monday, Nov 9
At a glance
- Condition
- New
- Size
- 8"
- Dimensions
- 8 x 8 x 28 in
- Weight
- 16 oz
- Material
- Alloy Steel
- Cutting Diameter
- 8 in
- Finish Type
- Steel
- In the box
- 8" Auger Bit
Features 5
- VERSATILE GARDEN & LANDSCAPING APPLICATIONS Suitable for installing fence posts, planting trees and shrubs, preparing garden beds, and completing various farm and landscaping projects. A practical digging accessory for homeowners, gardeners, farmers, landscapers, and contractors.
- 8-INCH EARTH AUGER DRILL BIT Designed to create 8-inch diameter holes in soil for fence post installation, tree planting, landscaping, and outdoor construction projects. Ideal for preparing consistent holes using compatible gas-powered post hole diggers.
- HEAVY-DUTY STEEL CONSTRUCTION Built with durable steel construction for demanding outdoor digging applications. Designed to withstand regular use in suitable soil conditions, making it a practical attachment for gardening, farming, landscaping, and property maintenance.
- EFFICIENT SPIRAL DRILLING DESIGN Features a spiral auger blade that helps lift and remove loosened soil from the hole as it rotates. Promotes efficient digging, consistent hole formation, and reduced manual soil removal during outdoor installation projects.
- Earth Auger Bit - 8" Earth Auger Bit fits for common hand-held post-hole diggers with 3/4" shaft. Dig holes up to 28" in depth and 8" in width in most soil types, like silty, peaty, gravel, pebble, dry cracked soil, etc.
Description
Built using heavy wall tube for maximum strength drilling Ideal for fence installation, tree and bulb planting, and other outdoor needs Drills holes in all types of soil; the dirt removed is left around edge of hole in loose, easy-to-pack condition Designed for use with our gasoline and electric auger drill 10" inch auger Shaft size: 3/4", can not fit 1/2" chuck; Fits on all XtremepowerUS power heads ASIN B019GAZC5M Whether planting a tree or installing fence posts, this durable cast steel auger bit get the job done quickly. The auger bit features a tungsten carbide cutting tip and a universal 3/4" in. round shaft drive. Earth bits feature alloy steel blades and screw bits for maximum digging performance and versatility in a wide cross section of soil compositions.
Specs 21
| Material | Alloy Steel |
|---|---|
| Cutting Diameter | 8 inches |
| Finish Type | Steel |
| Shank Type | Round |
| Brand | XtremepowerUS |
| Brand Name | XtremepowerUS |
| Model | 81099 |
| UPC | 715050822723 |
| Unit Count | 1 Count |
| Manufacturer | XtremepowerUS |
| Part Number | 81089 |
| Number of Pieces | 1 |
| Item Weight | 16 ounces |
| Item Dimensions | 8 x 8 x 28 inches |
| Minimum Bore Diameter | 8 inches |
| Material Type | Alloy Steel |
| Finish Types | Steel |
| Surface Recommendation | Soil |
| Tool Flute Type | Spiral |
| Point Style | Taper Point |
| Number of Flutes | 1 |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Nov 9
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Great 8" Auger Bit
Size: 8"
I used this 8" Auger Bit to make the holes for fence posts using my XtremepowerUS electric auger. Excellent quality and durability. Did the job easily. Definitely was a great purchase for me.
Reviewed in the United States on June 28, 2026 by Mark A. Pannell
Tight fit to shaft and seems well made. Needs one improvement.
Size: 8"
Lighter weight than expected but worked very well overall. A big improvement might be a small vertical blade at the outer edge of the auger tip to cut roots. A one half inch root is enough to cause a problem and the horizontal bit end just moves it up or down and binds. A sharp vertical blade an inch or two high on the tip would likely cut off smaller roots and make the tool less likely to twist or meet resistance so easily. I may have one added by a welder. Overall, it did most 26 inch deep holes in a minute and I have dug 7500 holes in my sign career and wish I had bought this years ago. Overall recommended tool.
...
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Reviewed in the United States on March 3, 2024 by Robert
works like it should
Size: 8"
got this for my boyfriend and he said it is working like it should.
Reviewed in the United States on February 1, 2022 by Amazon Customer
Great for digging holes for trees & arborvitaes
Size: 8"
Tears through the ground weLL using a 72cc Auger machine. WiLL work weLL on smaLLer roots. If you hit larger roots the machine wiLL kick hard and could fracture your wrist or shoulder if you’re not paying close attention. Divide your area into quadrants. Auger a hole in each quadrant and finish in the middle with the 8” auger. Roots are your nemesis. Use a 4 inch bit to break the roots & then you are in the clear to power-auger holes for planting trees or arborvitaes. Fits standard 3/4” Auger machines. Comes with pin cotter pin.
...
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Reviewed in the United States on October 18, 2024 by ChicagoVegasJack
Great
Size: 8"
Great Product.
Reviewed in the United States on July 6, 2026 by Ted Baker
Digs fast
Size: 8"
Digs surprisingly fast. I have some different brand augers that dig much slower. This one digs through hard dirt like it was butter
Reviewed in the United States on November 18, 2025 by Bob Buttman
Works great!
Size: 8"
This item was perfect for what I needed to get done in my backyard,
Reviewed in the United States on March 12, 2026 by Howard Carroll
Does NOT fit Harbor Freight Auger
Size: 8"
These auger bits DO NOT FIT—I REPEAT DO NOT FIT—the gas-powered Harbor Freight earth auger. This is a 3/4 diameter bit, and the Harbor Freight takes a 7/8". These bits are also very lightweight and do not feel as strong/sturdy/beefy as the harbor freight auger bits.
Reviewed in the United States on November 6, 2024 by Valerie Sponsel