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home > BEFCO 18in x 48in Auger Bit – Double Flight | Fits 300–400 > BEFCO 18in x 48in Auger Bit – Double Flight | Fits 300–400
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BEFCO 18in x 48in Auger Bit – Double Flight | Fits 300–400Premium 18 48 Earth Auger Bit for Heavy Duty Post Hole Digging Large diameter auger bit engineered for deep, wide holes perfect for posts, poles, trees, and heavy construction groundwork. The BEFCO 18in x 48in Auger Bit Double Flight Fits 300400 is a heavy duty drilling attachment designed for use with the 300 and 400 series of BEFCO MOLE post hole diggers. Its purpose built for demanding tasks such as setting large fence posts, structural poles,
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Premium 18″ × 48″ Earth-Auger Bit for Heavy-Duty Post-Hole Digging

Large-diameter auger bit engineered for deep, wide holes — perfect for posts, poles, trees, and heavy construction groundwork.

The BEFCO 18in x 48in Auger Bit – Double Flight | Fits 300–400 is a heavy-duty drilling attachment designed for use with the 300- and 400-series of BEFCO MOLE post-hole diggers. It’s purpose-built for demanding tasks such as setting large fence posts, structural poles, vineyard or orchard posts, and planting sizable trees — anywhere you need a robust, wide-diameter hole.

Featuring a full 18-inch diameter and a generous 48-inch length, this auger bit enables you to dig deeper and wider than standard bits. Its **heavy-duty double-flight design** helps lift and eject soil efficiently, reducing clogging and speeding up hole digging even in compact or damp ground. With fully welded flighting, a reinforced mounting collar, and replaceable knives and point, this auger is built for long-term durability and minimal maintenance — ideal for contractors, farmers, landscapers, and construction crews doing repetitive, heavy-duty digging jobs.

BEFCO 18in x 48in Auger Bit Key Features

Extra-Large 18″ Diameter & 48″ Length

This size delivers wide, deep holes suitable for large posts, poles, or structural supports — ideal when standard augers aren’t enough.

Double-Flight Spiral Flighting (1/4″ Thick)

Dual spirals lift soil out effectively and minimize clogging, making digging faster and cleaner even in heavy or sticky soils.

Fully Welded Flighting & Reinforced Mount Collar

Built for rugged, repeated use — the welded construction and reinforced connection to the gearbox ensure strength and reliability under heavy loads.

Replaceable Knives & Standard Fish-Tail Point

Wear parts are serviceable, so cutting performance remains sharp over time — reducing replacement costs and extending tool life.

Compatibility with BEFCO MOLE 300 & 400 Series

Specifically made to fit the more powerful 300-512 and 400-512 post-hole diggers — ensuring seamless integration with the heavy-duty gearbox and PTO drive for optimal digging performance.

Built for High-Torque, Heavy Work

This auger is ideal for structural, agricultural, or landscaping jobs requiring large-diameter holes — from posts and poles to tree planting and vineyard work.

BEFCO 18in x 48in Auger Bit Specifications

Compatible Models

BEFCO MOLE post-hole digger — 300 & 400 Series

Auger Diameter

18 inches

Auger Length

48 inches

Flighting

Double flight, fully welded

Flighting Thickness

1/4 inch

Standard Point

Fish-tail auger point, replaceable knives & point

Calculating Your Shipping Quote:

You can instantly calculate shipping quotes to the lower 48 states by adding this product to your cart, proceeding to the checkout page, and entering your shipping address. This process allows you to test different addresses and configurations. Please contact us directly for quotes for shipping internationally or outside the continental US.

Cost-Effective Delivery Hierarchy:

To help you save on freight costs, shipping options are priced in this order (least to most expensive):

  • Most Cost-Effective: Terminal Pickup
  • Mid-Range: Delivery to a Business Address with a Loading Dock
  • Higher Cost: Residential delivery where you assist offload with a forklift (must be available)
  • Most Expensive: Residential delivery with Lift Gate Service
  • Guaranteed Safe Delivery & Insurance: All freight orders include basic insurance coverage. Additional, comprehensive insurance is available upon request.
  • Inspection Upon Delivery is Required: IMPORTANT: Please thoroughly inspect the packaging and the product for any damage before the delivery driver departs. Any damage must be clearly noted on the delivery paperwork (Bill of Lading) for a claim to be processed.
  • Lowest Rates Negotiated: We work hard to secure the best possible rates for our customers from trusted carriers, including AAA Cooper, ESTES, UPS, FedEx, and many others.
  • Shipping Rate Price Match: If you believe you have found a better shipping rate elsewhere, please reach out to our team to negotiate.

BEFCO 18in x 48in Auger Bit – Double Flight | Fits 300–400

Item no : 36510945936
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US$ 367.50
Pay in 4 interest-free payments of $91.88 Learn more
Min. order: 1piece

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Ships within 48 hours · Estimated delivery Jun 27 - Jul 2

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