Top 10 Best 123 block in 2026

Last Updated - 6/21/2026

🏆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

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$20.99

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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.

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$16.36

$17.86

-8%

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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.

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$22.35

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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

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$19.89

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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.

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$23.77

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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.

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$23.13

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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

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$18.71

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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

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$20.28

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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

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$17.99

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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

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$20.09

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