Best Spiral Reduced Shank Drill Bits in 2026

Daisy
Last Updated: Feb 12, 2026

At a Glance: Our Top Picks for Spiral Reduced Shank Drill Bits

Irwin Tools 3016027 Single Cobalt Alloy Steel High-Speed Steel Drill Bit with 5-3/8" Length and Reduced Shank
#TOP1
Irwin Tools 3016027 Single Cobalt Alloy Steel High-Speed
9.8
PM SCORE
IRWIN 63112ZR 3/16-Inch Cobalt Alloy Steel, 135-Degree, Jobber Length Drill Bit, Pack of 12
#TOP2
Irwin 63112Zr 3/16-Inch Cobalt Alloy Steel, 135-Degree, Jobber
9.8
PM SCORE
Irwin Tools 1966894 Marples Wood Drilling Forstner Bit, 1/4"
#TOP3
Irwin Tools 1966894 Marples Wood Drilling Forstner Bit,
9.5
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 Spiral Reduced Shank Drill Bits of 2026

Market Overview
Spiral Reduced Shank Drill Bits Reviewed
  • Reviews Analyzed: 3491 Items
  • PM Avg. Rating: 7.2 / 10
6 Products Evaluated
  • Highest Price: $23.99
  • Lowest Price: $5.99
  • Avg. Price: $11.99
#TOP1

Irwin Tools 3016027 Single Cobalt Alloy Steel High-Speed Steel Drill Bit With 5-3/8" Length And Reduced Shank

IRWIN TOOLS
3016027
6.50 X 1.50 X 0.60 Inches
0.38 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
WESTOCKTOOLS 7.57

Features

Ideal for drilling in tough metal, including heavy-duty abrasive alloy metal drilling on hardened steel

Made from industrial grade High-Speed Steel for increased durability. 8% Cobalt alloy steel is heat and abrasion-resistant

135-degree split-point tip starts drilling immediately with less force and eliminates "walking" across the work surface

Bit has a straight shank

Irwin 63112Zr 3/16-Inch Cobalt Alloy Steel, 135-Degree, Jobber Length Drill Bit, Pack Of 12

IRWIN TOOLS
63112ZR
5.25 X 0.29 X 0.25 Inches
0.02 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
A-Z Best Deal 9.92

Features

M-35 Cobalt Alloy Steel Construction for Durability in abrasive materials

Jobber drill bits feature 135-Degree Split Point Tips for reduced bit walking

Straight shank works in both keyed and key-less drill chucks

Heavy duty spiral flute design produces faster chip ejection

Shorter cutting lips reduce torque for drilling in high tensile strength materials

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

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

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

Top 10 reduced shank drill bits Brands on Amazon

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

Brand Count
Irwin Tools 4
Irwin 2

Top 10 reduced shank drill bits Brands Pie Chart


We've carried out a comprehensive analysis of 3,491 reviews on reduced shank drill bits, using our selection criteria to identify the best options in the home improvement. Our findings reveal that most customers typically select reduced shank drill bits priced around $11.99, with top brands including highdril, efficere, hiltex, 1wanyue, accusize industrial tools, valyriantool, neiko, ta-vigor and newshark and bosch

Our team of expert editors reviewed these high-quality items and handpicked the top 6 reduced shank drill bits for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the home improvement category. These include ningbo diatool diy tools, efficere tools, amazon.com, 1wanyue, accusize tools, valyrian tools, funitricuuu, newshark and gyros tools and jefe hex .

We are dedicated to assisting our users in finding the right bits Products based on their needs, saving them considerable time when choosing which reduced shank drill bits to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.