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Irwin Tools IRWIN Marples Forstner Bit Set, Wood Drilling, 8 Piece (1966892)

  • Based on 2,002 reviews
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Availability: In Stock.
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Arrives Sunday, Jan 18
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Features

  • Easily drills high-quality flat-bottomed and pocket holes
  • Features optimized ultra-sharp cutting teeth specifically engineered to cut through hard and soft woods smoothly and efficiently
  • Significantly reduces cutting time compared with traditional forstner bits
  • Reduced shank fits 3/8" and larger drills and drill presses
  • Set includes 1/4" (6.3mm), 3/8" (9.5mm), 1/2" (12.7mm), 5/8" (15.8mm), 3/4" (19.0mm), 7/8" (22.2mm), 1" (25.4mm), 1-3/8" (34.9mm) forstner bits

Description

IRWIN Marples Wood Drilling Forstner bits are constructed of tough carbon steel to stay sharp and produce precise pocket holes and flat-bottomed (blind) holes. The ultra-sharp cutting edges feature optimized angles to cut more quickly and accurately through hard and soft woods than traditional forstner bits. With a reduced shank, these bits fit 3/8" and larger drills and drill presses, these wood drill bits are ideal for fine woodworking, cabinet-making and more. Set includes 1/4" (6.3mm), 3/8" (9.5mm), 1/2" (12.7mm), 5/8" (15.8mm), 3/4" (19.0mm), 7/8" (22.2mm), 1" (25.4mm), 1-3/8" (34.9mm) forstner bits.

Material: Blend


Cutting Diameter: 34.9 Millimeters


Finish Type: Brushed


Shank Type: Straight


Brand: IRWIN


Material: ‎Blend


Cutting Diameter: ‎34.9 Millimeters


Finish Type: ‎Brushed


Shank Type: ‎Straight


Brand: ‎IRWIN


Item dimensions L x W x H: ‎9.6 x 2.5 x 9.7 inches


Tool Flute Type: ‎Straight


Point Style: ‎Center Point


Surface Recommendation: ‎Steel,Wood


Number of Flutes: ‎2


UPC: ‎042526943546


Set Name: ‎IRWIN Marples Wood Drilling Forstner Bit Set, 8 Piece


Unit Count: ‎1.0 Count


Global Trade Identification Number: ‎46, 40


Manufacturer: ‎Irwin Tools


Number of Pieces: ‎8


Part Number: ‎1966892


Item Weight: ‎1.84 pounds


Product Dimensions: ‎9.6 x 2.5 x 9.7 inches


Item model number: ‎1966892


Is Discontinued By Manufacturer: ‎No


Size: ‎One Size


Color: ‎Multi


Style: ‎Classic


Finish: ‎Brushed


Pattern: ‎Solid


Shape: ‎Rectangular


Power Source: ‎Hand_powered


Item Package Quantity: ‎1


Measurement System: ‎Inch


Included Components: ‎Marples Wood Drilling Forstner Bits(8)


Batteries Included?: ‎No


Batteries Required?: ‎No


Warranty Description: ‎CN


Date First Available: May 10, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jan 18

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Great drill bits
Awesome drill bits. I use them all the time. I build a lot of things from scratch using different types of wood and these drill bits work really great. I use them in my drill press all the time. The holes are perfect and true to size. I would recommend them to anyone who does woodworking
Reviewed in the United States on December 29, 2025 by Doug Powell

  • Exceptional Forstner Bit Set
I was looking for a set of forstner bits to cut holes for scroll saw projects. I have used Irwin tools many times in the past and have been satisfied with their quality, so I decided to give the Irwin forstner bits a try after reading the reviews. The case is very well designed. The bits are very sharp and durable. The type of wood I have used the bits on so far has been primarily poplar wood which is a softer hardwood, so I can not attest to how the bits will work with the harder woods, but for what I need them for, they have performed as well if not better than expected. The case that the bits are enclosed in is very secure. Unlike some cases I have had, the bits do not drop out when opened if upside down, they are secure and have to be intentionally removed. It was a very good price and I am very pleased with this forstner bit set. I would highly recommend this bit set. ... show more
Reviewed in the United States on August 19, 2025 by btseed btseed

  • Good quality
Great price
Reviewed in the United States on December 6, 2025 by Michael

  • Wide diameter shaft
These are very nice but they do not fit in a standard diameter router as far as I could tell, so I had to use a drill.
Reviewed in the United States on November 21, 2025 by Luke

  • Great tool for drilling holes in wood
Use these in my wood shop to drill the right sized holes in wood. They work great!
Reviewed in the United States on November 18, 2025 by Daniel G. Castro

  • Good quality bits
Super sharp bits and chew through wood quickly. I use them currently almost exclusively for building birdhouses which I make a lot of in the spring time. Might seem like an insignificant project but these bits chew through cedar better than bits I have used in the past. Leaves and very nice clean hole especially if you use a sacrificial piece behind it. ... show more
Reviewed in the United States on June 22, 2025 by Matthew Matthew

  • Good quality
Good quality very sharp
Reviewed in the United States on November 11, 2025 by Grant S.

  • Sharp bits
Nice set of bits. Sharp and cut good.
Reviewed in the United States on August 21, 2025 by RDH

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