Best Irwin Tools Forstner Drill Bits in 2026

Daisy
Last Updated: Feb 7, 2026

At a Glance: Our Top Picks for Irwin Tools Forstner Drill Bits

Irwin Tools 1966894 Marples Wood Drilling Forstner Bit, 1/4"
#TOP1
Irwin Tools 1966894 Marples Wood Drilling Forstner Bit,
9.5
PM SCORE
Irwin Tools 42936 4-Inch Extension Bore Silver
#TOP2
Irwin Tools 42936 4-Inch Extension Bore Silver
9.3
PM SCORE
Irwin 42918 1-1/8-Inch by 3/8-Inch Shank Forstner Bit
#TOP3
Irwin 42918 1-1/8-Inch By 3/8-Inch Shank Forstner Bit
5.4
PM SCORE

* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.

Summary of the Best Irwin Tools Forstner Drill Bits of 2026

Irwin Tools 1966894 Marples Wood Drilling Forstner Bit, 1/4"

IRWIN
1966894
1.10 X 3.75 X 6.75 Inches
0.09 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Drills flat-bottomed and pocket holes in significantly less time than traditional Forstner bits

Features optimized ultra-sharp cutting teeth specifically engineered to cut through hard and soft woods smoothly and efficiently

Easily drills high-quality flat-bottomed and pocket holes with a fine, smooth finish

Reduced shank fits 3/8" and larger drills and drill presses

Ideal for fine woodworking, cabinet-making, and more

Irwin Tools 42936 4-Inch Extension Bore Silver

IRWIN
42936
3.50 X 0.68 X 0.68 Inches
0.12 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Uzee Supply 8.77

Features

Brad Point to Start Holes Cleanly

Sharp cutting edge for smooth holes

Reduced shank fits 3/8-Inch and larger drills and drill presses

manufactured to exacting tolerances

Produces Flat Bottom Holes

Irwin 42918 1-1/8-Inch By 3/8-Inch Shank Forstner Bit

IRWIN TOOLS
42918
1.60 X 3.80 X 6.80 Inches
0.30 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Team FTO Store 9.53

Features

3-1/2" overall length, 1-1/8" diameter, .375" round shank

Bores precision holes at any angle

Extra sharp cutting edges drill smooth, flat-bottomed holes

Fit 3/8" drills and drill presses

Irwin 42914 7/8-Inch By 3/8-Inch Shank Forstner Bit

IRWIN TOOLS
42914
7.00 X 3.80 X 1.60 inches
0.20 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Columbia Safety and Supply 8.60

Features

Irwin 42916 1-Inch By 3/8-Inch Shank Forstner Bit

IRWIN TOOLS
42916
1.60 X 3.80 X 6.80 Inches
0.02 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Hearthshire 9.96

Features

This product is easy to use.

This product is highly durable

This product is manufactured in China

Wood Boring

Marine Grade Rating: IP-64

3-1/2" overall length, 1" diameter, .375" round shank

Bores precision holes at any angle

Extra sharp cutting edges drill smooth, flat-bottomed holes

Fit 3/8" drills and drill presses

1" Wd Forstner Bit

IRWIN TOOLS
585-42916
7.00 X 2.00 X 1.00 Inches
0.25 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
J outlet 2 llc 9.79

Features

Reduced shank fits 3/8" and larger drills and drill presses

Starts the bit cleanly on uneven surfaces

Irwin 42932 2-Inch By 3/8-Inch Shank Forstner Bit

IRWIN TOOLS
42932
7.00 X 4.00 X 2.00 Inches
0.40 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Hearthshire 9.96

Features

This product is easy to use.

This product is highly durable

This product is manufactured in China

3-1/2" overall length, 2" diameter, .375" round shank

Bores precision holes at any angle

Extra sharp cutting edges drill smooth, flat-bottomed holes

Fit 3/8" drills and drill presses

Irwin Tools 42934 2-1/8 Inch Forstner Bit, 3/8 Inch Shank

IRWIN
42934
13.50 X 3.67 X 3.25 inches
0.45 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Hearthshire 9.96

Features

3-1/2¿ overall length, 2-1/8¿ diameter, .375¿ round shank

Bores precision holes at any angle

Extra sharp cutting edges drill smooth, flat-bottomed holes

Fit 3/8¿ drills and drill presses

Irwin 42924 1-1/2-Inch By 3/8-Inch Shank Forstner Bit

IRWIN TOOLS
42924
8.00 X 4.00 X 1.00 Inches
0.60 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
The Lighthouse 45 Group 5.93

Features

This product is easy to use.

This product is highly durable

This product is manufactured in China

3-1/2" overall length, 1-1/2" diameter, .375" round shank

Bores precision holes at any angle

Extra sharp cutting edges drill smooth, flat-bottomed holes

Fit 3/8" drills and drill presses

Giantpix Bundle Of Irwin Tools Marples Wood Drilling Forstner Bit Set Of 5 Pc Sizes: 1/4, 1/2, 3/4, 1 & 1-1/8 Inch Woodworking Tools For Professional, Home Improvement & Diy Woodworking Drill Projects

GIANTPIX
1966931 1966894 1966896 1966898 1966900
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Healthy Mindset 2020 5.05

Features

5-piece IRWIN Marples 3-1/2" long drill bits for wood forstner bit set in sizes 1/4" (1966894), 1/2" (1966896), 3/4" (1966898), 1" (1966900), 1-1/8" (1966931) for versatile woodworking projects.

The forstner bit set for wood constructed of tough carbon steel to stay sharp for creating precise pocket holes & flat-bottomed holes in wood for tasks such as mortise and tenon joints and doweling.

The forster bites set, woodworking tools and wood drill bit set are perfect for both professional and DIY woodworking projects to cut through hard and soft woods smoothly and efficiently.

The flat-bottomed design of the wood forstner bit allows for easy drilling on wood countertop. Forstner drill bits for wood are perfect for drilling deep, clean holes in wood.

These foster drill bit set are durable high-speed steel construction for long-lasting performance. Forstner bits ideal for fine woodworking, cabinet-making, and more.

Irwin 42928 Forstner Drill Bits

IRWIN TOOLS
42928
13.50 X 3.67 X 3.25 Inches
0.30 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MaxWarehouse 9.82

Features

precision holes at angle Extra sharp

cutting edges drill smooth, flat-bottomed holes Fit 3/8" drills

and drill presses 1-3/4" diameter Carded

3/4" Wd Forstner Bit

IRWIN TOOLS
42912
0.02 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
J outlet 2 llc 9.79

Features

Reduced shank fits 3/8" and larger drills and drill presses

Starts the bit cleanly on uneven surfaces

Irwin 1966899 7/8" Forstner Wood Boring Bit

IRWIN TOOLS
42914
1.10 X 3.80 X 6.80 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
ToolandEquipSales 5.71

Features

For boring flat bottom holes in wood

Fits 3/8" min. chucks

Clamshell

Irwin Forstner Bit 18 Piece Merchandiser

IRWIN TOOLS
1781763
27.50 X 1.00 X 5.00 Inches
1.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

FORSTNER BIT 18 PIECE MERCHANDISER

FORSTNER BIT 18 PIECE MERCHANDISER

FORSTNER BIT 18 PIECE MERCHANDISER

FORSTNER BIT 18 PIECE MERCHANDISER

FORSTNER BIT 18 PIECE MERCHANDISER

Irwin Speedbor 2-1/4 In. Dia. X 5 In. L Hardened Steel Hole Cutter 1 Pc.

IRWIN TOOLS
3046012
33.00 X 2.75 X 6.50 Inches
0.80 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
PlumberStock 9.67

Features

Diameter:21/4 in

Material:Carbon Steel

Finish:Black Oxide

Point Type:Aggressive Screw

3X Cutting edges extends bit life compared to standard IRWIN selffeed bits

Top 10 forstner drill bits Brands on Amazon

Here is the list of top-rated brands that were evaluated by PM.

Brand Count
Irwin Tools 11
Irwin 3
Giantpix 1

Top 10 forstner drill bits Brands Pie Chart


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