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Description
📘 Overview
The Blue Diamond Variable Auger Extension adds reach to your skid steer auger drive so you can drill deeper holes without swapping to a longer auger. It installs on a standard skid steer auger drive quick-attach shaft. It fits between the auger drive and the bit, and its variable design lets you set the working length to the depth the job needs. It is a dependable blue diamond auger extension variable for professional operators.
This listing covers the variable extension range in the common shaft interfaces — 2″ hex and 2 9/16″ round — in lengths from 24″ to 72″. Match the extension shaft to your existing auger drive's output shaft and choose the length for how much extra depth you need.
As a variable auger extension skid steer operators use for deep footings and posts, it saves buying a second full-length auger just to reach depth. A telescoping auger extension approach lets one auger cover a range of depths, and a deep drilling auger extension keeps a standard drive productive on jobs that would otherwise need specialized tooling.
Each extension ships as a kit with a retainer bolt. Common uses include deep footing holes, fence and sign posts below frost line, and any drilling where the standard auger runs out of depth before the hole is finished.
⚙ Variable Auger Extension Features
- Variable working length for adjustable drilling depth
- Available in 2″ hex and 2 9/16″ round shaft interfaces
- Lengths from 24″ to 72″
- Ships as a kit with retainer bolt
- Fits between auger drive and auger bit
- Matches standard Blue Diamond auger drive shafts
🔑 Why Choose the Blue Diamond Variable Auger Extension
- Reach depth without a second auger — extend your existing bit instead of buying a full-length auger just to drill deeper, saving cost and storage.
- Variable length adapts to the job — set the working length for footings, frost-line posts, or shallow holes with one tool.
- Matches your drive's shaft — offered in 2″ hex and 2 9/16″ round so it pairs with standard auger drive output shafts.
- Complete kit — includes the retainer bolt, so it's ready to install between drive and bit.
- Keeps a standard drive productive — turns a routine auger setup into a deep-drilling rig without specialized equipment.
📊 Skid Steer Auger Drive Specifications
| Part Number | Configuration | Weight |
|---|---|---|
| 205315-KIT | VARIABLE, 2” HEX 24” LONG | 34 lbs |
| 205320-KIT | VARIABLE, 2” HEX 48” LONG | 56 lbs |
| 205325-KIT | VARIABLE, 2” HEX 72” LONG | 77 lbs |
| 205334-KIT | VARIABLE, 2” ROUND 48” LONG | 46 lbs |
| 205312-KIT | VARIABLE, 2 9/16” ROUND 12” LONG | 21 lbs |
| 205317-KIT | VARIABLE, 2 9/16” ROUND 24” LONG | 40 lbs |
| 205335-KIT | VARIABLE, 2 9/16” ROUND 48” LONG | 74 lbs |
📋 Variable Auger Extension Options
- 205315-KIT — VARIABLE, 2” HEX 24” LONG
- 205320-KIT — VARIABLE, 2” HEX 48” LONG
- 205325-KIT — VARIABLE, 2” HEX 72” LONG
- 205334-KIT — VARIABLE, 2” ROUND 48” LONG
- 205312-KIT — VARIABLE, 2 9/16” ROUND 12” LONG
- 205317-KIT — VARIABLE, 2 9/16” ROUND 24” LONG
- 205335-KIT — VARIABLE, 2 9/16” ROUND 48” LONG
🔗 Attachment Compatibility
This variable extension inserts between the auger drive and the bit on a 2″ hex shaft, adding reach for deeper holes. Confirm your drive and bit both use a 2″ hex before ordering.
🚜 Machine Compatibility
Drives Blue Diamond and compatible auger bits via a 2″ hex output shaft. Mounts to skid steers, mini skid steers, and excavators equipped with the matching carrier:
Skid Steer Universal QA
Mini Quick-Attach
Excavator Coupler
2″ Hex Bit Drive
Compatibility is determined by mount type and hydraulic flow, not brand — confirm your machine's mount and flow before ordering. Not sure it fits your machine? Contact eskidsteer.com at (866) 757-8337.
❓ Frequently Asked Questions
Q: How do I know which shaft size to order?
Check your auger drive's output shaft and your bit's input — they'll be either 2″ hex or 2 9/16″ round. Order the extension that matches both. If your drive and bit differ, you'll need the shaft that matches your drive output, and a bit that matches the extension's lower end.
Q: What is the difference between a variable and a fixed extension?
A variable extension lets you adjust the working length for different depths, while a fixed extension is a set length. Choose variable if you drill a range of depths and want one tool to cover them; choose fixed if you always drill to the same depth.
Q: What length extension do I need?
Lengths run 24″ to 72″. Add the extension length to your auger's own drilling depth to get total reach. For frost-line posts or deep footings, the 48″ and 72″ options are most common; shorter extensions suit modest depth increases.
Q: Does it come with everything to install?
Yes — each variable extension ships as a kit including the retainer bolt, so it's ready to mount between your auger drive and bit.
Q: How is shipping calculated?
Shipping is calculated at checkout — add the item to your cart, enter your delivery address, and the shipping charge is displayed before you complete your order. Lift gate service is available for residential deliveries and can be selected at checkout.
Q: How do I order?
Add the item to your cart directly on eskidsteer.com and complete checkout online. Have your machine make, model, and serial number ready to confirm fitment before ordering. If you have a fitment question before purchasing, call us at (866) 757-8337.
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Shipping
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Returns
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