Top 10 Best 123 blocks in 2026

Last Updated - 6/6/2026

🏆Best Choice

Melissa & Doug

Melissa & Doug Deluxe Wooden ABC/123 1-Inch Blocks Set with Storage Pouch (50 pcs)

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Learn, Stack & Spell: These premium toddler toys offer endless ways to play by stacking, sequencing and combining colorful alphabet & number blocks, to build small words, count objects and imagine fun structures
•Classic Wooden Block Set: Includes 50 solid wood blocks (1 x 1 inch size) with painted letters, numbers, and picture art—packed in a fabric toy storage pouch, for convenient transport & easy cleanup
•Montessori Learning Toys: Develops fine motor skills through sorting, stacking, sequencing & balancing, as well as letter and number recognition, with toddler toys designed to promote early literacy and numeracy
•Educational Toys for Any Occasion: When buying a birthday gift & holiday gifts for kids, or rewarding little milestones, celebrate the moments that matter with Melissa and Doug toys for boys & girls
•Wholesome Play for 35+ Years: Melissa & Doug inspires kid-powered play with its learning toys for kids, baby & toddler toys, puzzles, games, building toys & stuffed animals, dolls, & even a doll house

View offer on:

$20.99

Check Price

Jecoupoon

Jecoupoon 123 Blocks Matched Pair 23 Holes .0003 Precision Ground Machinist Set Up Blocks HRC 55-62 (1-2-3" Blocks 0.0002")

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•1.Overall size is within +/- .0003; Flatness and parallelism within .0003.
•2.Made of precision-grade tool steel hardened and ground on all 6 sides of block, heat treated and case hardened to HRC 57-62.
•3.Accuracy and squareness on all sides within 0.0003.
•4.Matched pair blocks includes 2 blocks.

View offer on:

$16.36

$17.86

-8%

Check Price

Jecoupoon

Jecoupoon 123 Blocks Matched Pair 23 Holes .0002 Precision Ground Machinist Set Up Blocks HRC 55-62 (1-2-3" Blocks 0.0001" Set)

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•1.Overall size is within +/- .0003; Flatness and parallelism within .0003.
•2.Made of precision-grade tool steel hardened and ground on all 6 sides of block, heat treated and case hardened to HRC 57-62.
•3.Accuracy and squareness on all sides within 0.0003.
•4.Matched pair blocks includes 2 blocks.

View offer on:

$22.35

Check Price

Aspaton

Aspaton 123 Blocks 23 Holes 1 2 3 Block Within .0002" Tolerances 3-2-1 Blocks Set Used for Calibrating Equipment

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•23 Holes 1 x2 x3 inches precision in one in ten thousand
•High hardness, not easy to deform, not easy to wear, durable
•Easy to use
•A pair of 23 holes 1 x2 x3 inches parallel block set
•Precision ground and case hardened on all six sides

View offer on:

$19.89

Check Price

Nakkaa

Nakkaa Ultra Precision 1-2-3 Blocks Set with Screw Matched Pair 23 Holes .0001" Squareness Hardened Steel 1"x2"x3" Blocks Set Setup Blocks Industrial Tools w/Plastic Case

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Feature: 23 holes include 5 holes tapped to 3/8-16 and others untapped, cross drilling design allows for efficient use of lower weight with maximum strength.
•Accuracy: Squareness: 0.0001"; Parallelism: +/- 0.0001"; Height accuracy in pair: +/-.0001".
•Material]: Made of precision-grade tool stainless steel hardened and ground on all 6 sides of block, heat treated and case hardened to HRC 56-60.
•Application: Perfect for machinists, woodworkers, metalworkers, and more.
•Package Includes: 1 * matched pair 1-2-3 blocks; 5 * stainless steel socket head cap screws; 1 * hex key; 1 * fitted plastic case.

View offer on:

$23.77

Check Price

Aspaton

Aspaton Pair of 123 Blocks Set with Screw 23 Holes 1/10,000th Precision with Case

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•Accuracy: high precision, the parallel block is a piece with 23 holes 1 x2 x3 inches precision in one in ten thousand.
•Quality: made of high quality steel, high hardness, not easy to deform, not easy to wear, durable.
•Operation: easy to operate, easy to use.
•Product includes: a pair of 23 holes 1 x2 x3 inches parallel block set, 5 hexagonal screws and a hexagonal wrench.
•Note: Please confirm the precision when you buy to avoid buying the wrong one, so as not to delay your time.

View offer on:

$23.13

Check Price

WEN

WEN 10423 3 x 2 x 1-Inch Steel-Hardened Precision 123 Blocks, Two Pack

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Perfect for machinists, woodworkers, metalworkers, and more
•Each block measures 3 by 2 by 1 inches in size
•Features 5 threaded 3/8-16 UNC cross-drilled holes
•Calibrate equipment, space workpieces, or collect exact measurements
•Includes a set of two 1-2-3 blocks

View offer on:

$18.71

Check Price

WFLNHB

WFLNHB 1 x 2 x 3 Inch Blocks No Holes Matched Pair Hardened Steel Plain (1"x2"x3") 123 Set Accuracy Machinist Milling

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Dimensions- 1" x 2" x 3", 3.5 lbs. weight
•Accuracy and squareness on all sides within .0001"-.0002"
•123 inch metal block made of accuracy-grade tool steel, hardened and ground on all 6 sides of the block
•Surface finish from 6 to 16 microinches
•Heat treated and case hardened to HRC 57-62

View offer on:

$20.28

Check Price

WFLNHB

WFLNHB 1 Matched Pair Accuracy 1 x 2 x 3 Inch Blocks 23 Holes 0.0002" Machinist 1-2-3 Set

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Product Dimensions: 1" x 2" x 3", 2.1 lbs. weight
•23 holes consists of 5 tapped holes that are 3/8-16 for clamping and 18 untapped holes
•Accuracy with squareness on all sides within .0002" per inch
•Hardened and accuracy Ground on all 6 sides of each block
•Cross drilling design gives minimum weight and maximum strength

View offer on:

$17.99

Check Price

findmall

findmall 1 x 2 x 3 Inch Blocks Matched Pair No Holes Hardened Steel Accuracy Ground Machinist 123 Blocks Set Up Blocks Fit for Accuracy Grinding Layouts

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Heat treated and case hardened to HRC 57-62
•Made of accuracy-grade tool steel hardened and ground on all 6 sides of metal block
•Accuracy and squareness on all sides within .0001"-.0002"
•Dimensions- 1" x 2" x 3", 3.5 lbs. weight
•Quantity deals on 123 blocks, parallels, sets, and inspection/set-up tooling in the All Industrial Tool Supply

View offer on:

$20.09

Check Price

📊

📈 How we rank

With our cutting-edge technology, we examine thousands of products and retailers, assessing reviews, ratings, trends, and sales rankings to identify what matters most to users like you.

Our team evaluates this data alongside genuine user feedback, merging AI analysis with human insights to provide you with real-time, highly-rated recommendations that empower your decision-making with clarity and confidence.