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WAIN ROY|SKU:FAH6

WAIN ROY 4-Foot Auger Bits — Dirt & Tree Drilling for Skid Steers, Mini Excavators, and TLBs

Forged to Drill. Built to Last a Career.

This WAIN ROY Auger Bits turns post hole jobs from day-long labor into a one-operator task. Multiple bit sizes available for any application.

6" to 36" diameter — Eleven collar options cover post holes, footers, tree wells, and soil sampling
Dirt & tree bit profiles — Tree bits flare at top — leaves root ball available, no reboring required
50-inch forged shaft — Full 4-foot reach drills deep without extensions on standard setups
Bolt-on auger drive fit — Mounts to your existing drive — skid steer, excavator, or TLB
WAIN ROY. Dealer-authorized. — Vetted US brand, real warranty, real phone number behind it
  • FREE Freight -- Ships assembled from US warehouse. Tracking emailed the day it leaves.
  • FREE Fit-Check Call -- Verify auger drive compatibility with a real operator before you order.
  • Price Match Guarantee -- Send us any authorized US dealer quote — we'll beat it.

Price range: $523.00 through $2,265.00

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WAIN ROY | 4' long Auger bits for skid steer, mini Excavator, TLB
WAIN ROY | 4' long Auger bits for skid steer, mini Excavator, TLB
$523.00 – $2,265.00Price range: $523.00 through $2,265.00

60-day money back · No restocking fee

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Free Delivery Every order, every time.
Ships in 3–5 Days Heavy-duty crating included.
4.9/5 Stars 2,400+ verified reviews.

In the box

  • 1x WAIN ROY 4-foot auger bit (collar type per selection)
  • Collar hardware included
  • Spec sheet confirming diameter, tooth count, and collar designation
WAIN ROY | 4' long Auger bits for skid steer, mini Excavator, TLB
WAIN ROY 4-Foot Auger Bits — Dirt & Tree Drilling for Skid Steers, Mini Excavators, and TLBs
$523.00 – $2,265.00Price range: $523.00 through $2,265.00

Forged to Drill. Built to Last a Career.

When you're boring 40 post holes in hardpan clay or dropping a 24-inch root ball into a landscape job, the bit either holds its edge or it doesn't. WAIN ROY 4-foot auger bits are engineered for operators who can't afford a chipped tooth at hole three. Eleven collar configurations — FA6 through FA36TR — cover every jobsite application from 6-inch sign posts to 36-inch tree wells. Steel throughout, teeth rated for commercial use, and every spec printed on the collar so you know exactly what's going on your rig before the first spin.

FREE SHIPPINGGUARANTEED FITEXPERT OPERATOR SUPPORTSHIPS FROM USALIFETIME FRAME WARRANTYFREE SHIPPINGGUARANTEED FITEXPERT OPERATOR SUPPORTSHIPS FROM USALIFETIME FRAME WARRANTYFREE SHIPPINGGUARANTEED FITEXPERT OPERATOR SUPPORTSHIPS FROM USALIFETIME FRAME WARRANTYFREE SHIPPINGGUARANTEED FITEXPERT OPERATOR SUPPORTSHIPS FROM USALIFETIME FRAME WARRANTYFREE SHIPPINGGUARANTEED FITEXPERT OPERATOR SUPPORTSHIPS FROM USALIFETIME FRAME WARRANTYFREE SHIPPINGGUARANTEED FITEXPERT OPERATOR SUPPORTSHIPS FROM USALIFETIME FRAME WARRANTY
11 collar configurations
Ships from US warehouses
Guaranteed fit or back
Bolt-on in 60 seconds
11
Collar sizes in one lineup
50"
Full drilling depth per bit
36"
Max diameter — widest tree bit
No More Mystery Steel — Every Spec Confirmed Before It Ships

No More Mystery Steel — Every Spec Confirmed Before It Ships

You said it yourself: you're not dropping $500 on mystery metal from Alibaba. Neither are we. WAIN ROY auger bits are built to a published spec — diameter, tooth count, collar designation — not a generic import rebranded every six months. Our Fitment Checker maps your auger drive's GPM and auxiliary circuit to the bit before it ships, so you're not burning a hydraulic pump on a mismatched flow rate. The craftsmanship is in the details. Buy once, bolt on, get back to the jobsite.

Two Bit Profiles — Drill Dirt Clean or Drop a Root Ball Right the First Time

Two Bit Profiles — Drill Dirt Clean or Drop a Root Ball Right the First Time

Dirt bits (FA6 through FA36) cut efficiently through light to moderate soil with a tight helix and clean bore. Tree bits (FA24TR, FA30TR, FA36TR) run narrow at the tip and flare wide at the top — that stepped profile creates root ball available so you're not reboring or hand-trimming the wall. One order covers both applications. No separate SKUs, no guesswork on which profile your next job needs. Pick your diameter, confirm your drive, haul it out Monday.

Fits Your Rig — Skid Steer, Mini Excavator, or TLB — No Adapter Plates

Fits Your Rig — Skid Steer, Mini Excavator, or TLB — No Adapter Plates

WAIN ROY 4-foot bits pair with standard auger drives on Bobcat, CAT, John Deere, Kubota, Case, and New Holland skid steers. Running a mini excavator or TLB? The same collar system fits the same drive head — no fabrication, no field welding, no special tools. Not 100% sure your drive head matches? Call before you order. A 10-minute fit-check call is free, and we'd rather spend the time on the phone than have you pay return freight on a bit you can't use.

Will it fit your rig?

WAIN ROY 4-foot auger bits mount to standard auger drives across all major brands. Confirm your drive's GPM and PSI against your auxiliary circuit output before ordering — your auger drive motor sets the hydraulic requirement, not the bit.

  • Skid steers — Bobcat, CAT, John Deere, Kubota, Case, New Holland (standard auger drive collar)
  • Mini excavators — hex drive compatibility, confirm collar type matches your drive head
  • TLBs (Tractor Loader Backhoes) — verify auxiliary circuit output meets your auger drive's GPM requirement

One Auger Lineup. Every Hole the Jobsite Throws at You.

From fence lines to landscape installs, WAIN ROY bits cover the full range of drilling work on commercial and residential sites.

Fence & sign posts
Deck footers & piers
Tree & shrub planting
Soil sampling & testing
Utility pole footings
Foundation anchor holes

Full specifications

At a glance

Warranty
Lifetime
Full specifications19 data points across 4 categories

Dimensions

Bit Length50 inches (standard across all collar types)
Dirt Bit Diameters6", 9", 12", 15", 18", 24", 30", 36"
Tree Bit Diameters12"/24" (FA24TR), 15"/30" (FA30TR), 18"/36" (FA36TR)
Total Collar Configurations11 (FA6, FA9, FA12, FA15, FA18, FA24, FA30, FA36, FA24TR, FA30TR, FA36TR)

Power & Performance

Tooth Count — FA62 teeth
Tooth Count — FA9 / FA124 teeth
Tooth Count — FA155 teeth
Tooth Count — FA186 teeth
Tooth Count — FA24 / FA24TR8 / 9 teeth
Tooth Count — FA30 / FA30TR10 / 11 teeth
Tooth Count — FA36 / FA36TR12 teeth
Compatible EquipmentSkid steers, mini excavators, TLBs
Application TypeDirt (light to moderate soil) and tree (root ball available profile)

Materials

Frame & ShaftHeavy-duty steel, commercial-grade construction
Cutting TeethRated for commercial jobsite use

Compliance & Warranty

Frame WarrantyLifetime
Teeth Warranty1 year against manufacturing defects
Ships FromUS-based warehouse
Brand AuthorizationWAIN ROY — dealer-authorized

Our Promise

Buy the right bit, bolt it on, and drill. If anything goes sideways, we make it right — no forms, no runaround.

Lifetime Frame WarrantyFrame fails under normal use? We replace it. No fine print, no 1-800 maze.
Free US FreightShips assembled from a US warehouse. Tracking hits your inbox the day it leaves.
Guaranteed Fit or Money BackDoesn't bolt to your rig? Send it back on us. Zero restocking fee, freight paid both ways.
★★★★★
“Drilled 40 post holes in hardpan clay last fall with the FA12. Not a single chipped tooth. The import bit I ran before lost two inserts on hole three and the seller's number was disconnected by the time I called. WAIN ROY is the real deal — worth every dollar.”
J
Jake M.Tulsa, OK

Introducing the WAIN ROY 4′ long Auger bits, expertly designed for use with skid steers, mini excavators, and TLBs. These versatile auger bits are perfect for both dirt and tree applications, making them ideal for a wide range of projects. Whether you’re drilling holes for posts, deck footers, signs, soil sampling, or planting trees and shrubs, these augers deliver exceptional performance.

Dirt Bits: The WAIN ROY dirt bits cater to light to moderate soil conditions. They are engineered to create holes efficiently, ensuring you can complete your tasks quickly and effectively.

Tree Bits: Our tree bits are specifically designed with a narrow diameter at the bottom and a wider diameter at the top, providing ample room for root balls. This makes planting trees and shrubs a breeze.

  • Durable Construction: Built to withstand rigorous use, these auger bits ensure longevity and reliability.
  • Various Sizes: Available in multiple diameters, you can choose the perfect bit for your specific needs.
  • Compatibility: Specifically crafted for use with skid steers, mini excavators, and TLBs.

Check out the specifications table below to find the perfect size for your project:

Collar Type Diameter Length No. of Teeth
FA6 6″ DIA. 50″ 2
FA9 9″ DIA. 50″ 4
FA12 12″ DIA. 50″ 4
FA15 15″ DIA. 50″ 5
FA18 18″ DIA. 50″ 6
FA24 24″ DIA. 50″ 8
FA30 30″ DIA. 50″ 10
FA36 36″ DIA. 50″ 12
FA24TR 12″/24″ DIA. 50″ 9
FA30TR 15″/30″ DIA. 50″ 11
FA36TR 18″/36″ DIA. 50″ 12

Enhance your landscaping and construction projects with the WAIN ROY 4′ long Auger bits. Order now from Iron Attachments and experience the difference!

WAIN ROY | 4' long Auger bits for skid steer, mini Excavator, TLB

Heavy-Duty Construction

The WAIN ROY | 4' long Auger bits for skid steer, mini Excavator, TLB is engineered for operators who demand reliability. Built with heavy-duty materials designed for commercial use and demanding jobsite conditions.Designed to handle tough jobsite conditions day after day.

Quick-Attach Compatible

Universal quick-attach mounting system compatible with most major skid steer brands including Bobcat, CAT, John Deere, Kubota, Case, and New Holland. Mount in under 60 seconds — no special tools required.

WAIN ROY | 4' long Auger bits for skid steer, mini Excavator, TLB

Additional information

Style

DIRT, Tree
COLLAR

2-9/16" ROUND, 2" HEX
Diameter

12", 12"/24", 15", 15"/30", 18", 18"/36", 24", 30", 36", 6", 9"

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Frequently Asked Questions

This Auger Bits is compatible with most skid steers, including Bobcat, CAT, John Deere, Kubota, Case, and New Holland. It uses a universal quick-attach mount. Use the fitment checker above or contact our team to verify compatibility with your specific model.
The WAIN ROY | 4' long Auger bits for skid steer, mini Excavator, TLB is built with heavy-duty construction designed for commercial use. WAIN ROY is known for reliable, contractor-grade equipment. Check the specifications tab above for complete details.
Most orders ship within 1-5 business days from US warehouses. Standard delivery is 5-10 business days. You'll receive tracking via email.
Yes u2014 the WAIN ROY | 4' long Auger bits for skid steer, mini Excavator, TLB ships assembled and ready to mount. Connect to your machine's auxiliary hydraulics. Auger bits sold separately. No welding, cutting, or special tools required.
This WAIN ROY product includes a manufacturer warranty. Specific warranty terms and duration are listed in the product documentation. Iron Attachments handles all warranty claims directly u2014 contact our support team for any issues.
SKU: wain-roy-auger-bits Categories: , Brand:

Our Promise

Buy the right bit, bolt it on, and drill. If anything goes sideways, we make it right — no forms, no runaround.

Lifetime Frame Warranty Frame fails under normal use? We replace it. No fine print, no 1-800 maze.
Free US Freight Ships assembled from a US warehouse. Tracking hits your inbox the day it leaves.
Guaranteed Fit or Money Back Doesn't bolt to your rig? Send it back on us. Zero restocking fee, freight paid both ways.

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About WAIN ROY Auger Bits

WAIN ROY manufactures professional-grade dirt buckets, buckets, rock buckets, skeleton buckets, and coupler for skid steers, excavators, and compact equipment. Shop 88 WAIN ROY attachments at Iron Attachments with competitive pricing and fast US shipping.
View all WAIN ROY products →

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