Skip to content
Shop Your Local Store ● Ship to Your Hometown Store
Pro & Contractor Accounts ● Apply for Net Terms
100,000+ Products ● Trusted Authentic Brands
FAQ Shipping & Returns Order Lookup Contact Account
Shop the Collection
Shop Local. Support Independent. 29 products available
Bit Extensions

Shop 29 bit extensions at National Hardware Group — from trusted brands like Dewalt, Diablo, Eazypower and more. Every item is an authorized, warranty-backed purchase, with prices starting around $5.99. Ships nationwide, free over $75 on most items, or find it at your local store.

Trusted brands only Ships nationwide Pro accounts welcome Support your local hardware store
29 products
Milwaukee 18 in. Alloy Steel Drill Bit Extension 7/16 in. Hex Shank
In-Store

Milwaukee

Milwaukee 18 in. Alloy Steel Drill Bit Extension 7/16 in. Hex Shank

MPN: 48-28-4011

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
Find a Local Dealer
Diablo 5-1/2 in. L X 7/16 in. D Hole Saw Extension

Diablo

Diablo 5-1/2 in. L X 7/16 in. D Hole Saw Extension

MPN: DHS500XT6

$21.99
Diablo 12 in. L X 7/16 in. D Hole Saw Extension

Diablo

Diablo 12 in. L X 7/16 in. D Hole Saw Extension

MPN: DHS500XT12

$22.99
Lenox 1/4 in. Carbon Steel 10 in. L X 3/8 in. D Extension

Lenox

Lenox 1/4 in. Carbon Steel 10 in. L X 3/8 in. D Extension

MPN: 3084310X

$21.99
Eazypower Isomax 11 in. Hardened Steel Bit Extension Flexible Screwdriver Extension 1/4 in. Hex Shan

Eazypower

Eazypower Isomax 11 in. Hardened Steel Bit Extension Flexible Screwdriver Extension 1/4 in. Hex Shan

MPN: 73614

$24.99
Eazypower Isomax 7-1/2 in. Steel Bit Extension Extension 1/4 in. Hex Shank

Eazypower

Eazypower Isomax 7-1/2 in. Steel Bit Extension Extension 1/4 in. Hex Shank

MPN: 73610

$10.99
Eazypower Isomax 11 in. Steel Bit Extension Extension 1/4 in. Hex Shank

Eazypower

Eazypower Isomax 11 in. Steel Bit Extension Extension 1/4 in. Hex Shank

MPN: 73611

$18.99
Milwaukee 12 in. Alloy Steel Drill Bit Extension 7/16 in. Hex Shank
In-Store

Milwaukee

Milwaukee 12 in. Alloy Steel Drill Bit Extension 7/16 in. Hex Shank

MPN: 48-28-4006

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
Find a Local Dealer
Irwin Speedbor 6 in. Steel Wood Boring Bit Extension 1/4 in. Quick-Change Hex Shank

Irwin

Irwin Speedbor 6 in. Steel Wood Boring Bit Extension 1/4 in. Quick-Change Hex Shank

MPN: 88702

$7.59
Milwaukee Shockwave 6 in. Alloy Steel Impact Magnetic Locking Bit Holder 1/4 in. Hex Shank
In-Store

Milwaukee

Milwaukee Shockwave 6 in. Alloy Steel Impact Magnetic Locking Bit Holder 1/4 in. Hex Shank

MPN: 48-32-4532

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
Find a Local Dealer
Milwaukee Shockwave 12 in. Alloy Steel Impact Magnetic Locking Bit Holder 1/4 in. Hex Shank
In-Store

Milwaukee

Milwaukee Shockwave 12 in. Alloy Steel Impact Magnetic Locking Bit Holder 1/4 in. Hex Shank

MPN: 48-32-4533

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
Find a Local Dealer
Milwaukee Shockwave 2.88 in. Alloy Steel Impact Magnetic Locking Bit Holder 1/4 in. Hex Shank
In-Store

Milwaukee

Milwaukee Shockwave 2.88 in. Alloy Steel Impact Magnetic Locking Bit Holder 1/4 in. Hex Shank

MPN: 48-32-4531

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
Find a Local Dealer
Milwaukee 12 in. Alloy Steel Drill Bit Extension 3/8 in. Hex Shank
In-Store

Milwaukee

Milwaukee 12 in. Alloy Steel Drill Bit Extension 3/8 in. Hex Shank

MPN: 48-28-4008

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
Find a Local Dealer
Milwaukee Quik-Lok 5.5 in. Alloy Steel Drill Chuck Extension 7/16 in. Hex Shank
In-Store

Milwaukee

Milwaukee Quik-Lok 5.5 in. Alloy Steel Drill Chuck Extension 7/16 in. Hex Shank

MPN: 48-28-1030

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
Find a Local Dealer
Milwaukee 5.5 in. Alloy Steel Self-Feed Drill Bit Extension 7/16 in. Hex Shank
In-Store

Milwaukee

Milwaukee 5.5 in. Alloy Steel Self-Feed Drill Bit Extension 7/16 in. Hex Shank

MPN: 48-28-4001

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
Find a Local Dealer
Irwin 12 in. Steel Extension Drill Bit 1/4 in. Quick-Change Hex Shank
USA

Irwin

Irwin 12 in. Steel Extension Drill Bit 1/4 in. Quick-Change Hex Shank

MPN: 4935705

$12.99
Irwin 6 in. Steel Extension Drill Bit 1/4 in. Quick-Change Hex Shank
USA

Irwin

Irwin 6 in. Steel Extension Drill Bit 1/4 in. Quick-Change Hex Shank

MPN: 4935704

$12.99
DeWalt MaxFit 6 in. Steel Bit Extension 1/4 in. Hex Shank 1 pc
In-Store

Dewalt

DeWalt MaxFit 6 in. Steel Bit Extension 1/4 in. Hex Shank 1 pc

MPN: DWA6EXTMF

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
Find a Local Dealer
Milwaukee Quik-Lok 3/8 in. X 6 in. L Metal Extension Drill Bit
In-Store

Milwaukee

Milwaukee Quik-Lok 3/8 in. X 6 in. L Metal Extension Drill Bit

MPN: 48-28-2010

Check with your local store Sold in stores — they stock it, price it fair, stand behind it.
Find a Local Dealer
Eazypower Isomax Flex A Bit 11 in. Steel Flexible Bit Extension 1/4 in. Hex Shank

Eazypower

Eazypower Isomax Flex A Bit 11 in. Steel Flexible Bit Extension 1/4 in. Hex Shank

MPN: 73609

$17.99
Diablo Universal 12 in. L X 3/8 in. D Hole Saw Extension

Diablo

Diablo Universal 12 in. L X 3/8 in. D Hole Saw Extension

MPN: DHS375XT12

$17.99
Diablo 5-1/2 in. L X 3/8 in. D Hole Saw Extension

Diablo

Diablo 5-1/2 in. L X 3/8 in. D Hole Saw Extension

MPN: DHS375XT6

$15.99
Diablo 18 in. L X 3/8 in. D Hole Saw Extension

Diablo

Diablo 18 in. L X 3/8 in. D Hole Saw Extension

MPN: DHS375XT18

$20.99
Diablo Hex 2-3/8 in. L Magnetic Bit Holder Black Oxide

Diablo

Diablo Hex 2-3/8 in. L Magnetic Bit Holder Black Oxide

MPN: DBH238

$5.99
Keep browsing

Related categories

Hand & Power ToolsPower ScrewdrivingScrewdriving BitsSelf Feed & Extension Bits
Shop Local

Find these products at your local store.

Independent hardware retailers often carry the same products — sometimes at competitive prices. Every order helps keep them on the corner.

Why we built NHG →
For Pros & Businesses

Buying for a business? Get the pro treatment.

  • Net 30 terms
  • Volume & contract pricing
  • Gov & compliance ready
Apply for a Pro Account
Need a hand?

Real people. Real hardware experience.

Questions about fit, compatibility, or job requirements? Reach a real person — not a chatbot or contracted call center.

(866) 469-8556 Mon–Fri, 6 AM–5 PM PST Text (425) 515-2727 24/7 intake · next business day reply Send a message Routed to the right team based on your inquiry

Ask our counter. Or theirs.

Most hardware stores can do more than you think. If we can't help you, the folks down the street probably can — just ask at the counter.

What we offer
Shop Your Local Store Ship to your hometown store
Pro & Gov Accounts Net terms · tax-exempt
Ships Nationwide Direct to your door
Independent Network Real hardware stores
$0.68 of every dollar spent at a local independent business stays in the community. At a national chain, it's about fifteen cents. Civic Economics, multi-city retail studies
100% Authorized & Genuine — Our Guarantee →
Their Counter
Try local first · we'll wait

The stores we send you to are local and independently run — often for generations, the kind of place where someone behind the counter knows the regulars. We don't own them. We just think they deserve the foot traffic. They can put most of what we sell on their next truck. Ask there before you check out here.

Find a local store →
Mon–Fri 6–5 PST
Independent hardware retailer? Join the network →
About our directory. National Hardware Group is an independent retailer and directory. The local stores we list and link to are separately owned and operated — we have no ownership stake in any of them, and most pay us nothing to be included. That includes plenty of stores flying a familiar banner that people don't realize are locally owned and run, not operated by a corporation. Store owners can choose to upgrade their listing for an enhanced presence or pickup features, but the base directory is free, and inclusion is never a paid endorsement.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare