---
product_id: 607686746
title: "123 Blocks Matched Pair 23 Holes .0002 Precision Ground Machinist Set Up Blocks HRC 55-62 (1-2-3\" Blocks 0.0001\" Set)"
brand: "jecoupoon"
price: "₩99836"
currency: KRW
in_stock: true
reviews_count: 8
category: "Jecoupoon"
url: https://www.desertcart.kr/products/607686746-123-blocks-matched-pair-23-holes-0002-precision-ground-machinist
store_origin: KR
region: South Korea
---

# ±0.0003" size precision 0.0002" matched pair tolerance HRC 57-62 hardened steel 123 Blocks Matched Pair 23 Holes .0002 Precision Ground Machinist Set Up Blocks HRC 55-62 (1-2-3" Blocks 0.0001" Set)

**Brand:** jecoupoon
**Price:** ₩99836
**Availability:** ✅ In Stock

## Summary

> ⚙️ Elevate your machining game with precision that professionals swear by!

## Quick Answers

- **What is this?** 123 Blocks Matched Pair 23 Holes .0002 Precision Ground Machinist Set Up Blocks HRC 55-62 (1-2-3" Blocks 0.0001" Set) by jecoupoon
- **How much does it cost?** ₩99836 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/607686746-123-blocks-matched-pair-23-holes-0002-precision-ground-machinist)

## Best For

- jecoupoon enthusiasts

## Why This Product

- Trusted jecoupoon brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Perfectly Paired:** Matched pairs guarantee consistent 0.0002"-0.0003" tolerance for seamless alignment.
- • **Lightweight Strength:** Innovative cross-drilling design maximizes strength while minimizing weight.
- • **Rock-Solid Durability:** Crafted from heat-treated tool steel with HRC 57-62 for unmatched toughness.
- • **Micron-Level Precision:** Achieve flawless setups with ±0.0003" size accuracy and flatness.
- • **Six-Sided Precision Grinding:** Every surface is ground for ultimate squareness and parallelism.

## Overview

The 123 Blocks Matched Pair Set offers ultra-precise machinist setup blocks with ±0.0003" size accuracy, hardened tool steel construction (HRC 57-62), and matched pairs within 0.0002" tolerance. Perfect for ensuring flawless squareness and parallelism in industrial and scientific measuring tasks.

## Description

Size within +/- .0002"-+/- .0003"Flatness and parallelism within .0003"Accuracy and squareness on all sides within .0002"-.0003"Pairs are matched to a tolerance of 0.0002"-0.0003"Product featuresMade of hardened tool steel and precision ground on all six sidesSurface roughness: 6-16uinCross drilling design allows efficient use of lower weight with maximum strengthHeat treat and hardness 56 to 62 RCPackage Includes:2 pieces per set

Review: Good enough for a second unit - So good that this is me second pair. I found that I needed 2 pair for one of me setups.
Review: Works great! - The blocks worked great to keep my work square. They allowed me to shift my work around on my drill press with my work clamped.

## Features

- 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CJMHMNVW |
| Best Sellers Rank | #35,495 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Gage Blocks |
| Date First Available | September 22, 2023 |
| Item Weight | 2.86 pounds |
| Manufacturer | Jecoupoon |
| Package Dimensions | 9.09 x 6.38 x 2.44 inches |

## Images

![123 Blocks Matched Pair 23 Holes .0002 Precision Ground Machinist Set Up Blocks HRC 55-62 (1-2-3" Blocks 0.0001" Set) - Image 1](https://m.media-amazon.com/images/I/71rGR51KfHL.jpg)
![123 Blocks Matched Pair 23 Holes .0002 Precision Ground Machinist Set Up Blocks HRC 55-62 (1-2-3" Blocks 0.0001" Set) - Image 2](https://m.media-amazon.com/images/I/71HFaJS+jKL.jpg)
![123 Blocks Matched Pair 23 Holes .0002 Precision Ground Machinist Set Up Blocks HRC 55-62 (1-2-3" Blocks 0.0001" Set) - Image 3](https://m.media-amazon.com/images/I/61ofrgcNOrL.jpg)
![123 Blocks Matched Pair 23 Holes .0002 Precision Ground Machinist Set Up Blocks HRC 55-62 (1-2-3" Blocks 0.0001" Set) - Image 4](https://m.media-amazon.com/images/I/71TrcggiIvL.jpg)
![123 Blocks Matched Pair 23 Holes .0002 Precision Ground Machinist Set Up Blocks HRC 55-62 (1-2-3" Blocks 0.0001" Set) - Image 5](https://m.media-amazon.com/images/I/61pKgFlLfhL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good enough for a second unit
*by W***R on January 23, 2026*

So good that this is me second pair. I found that I needed 2 pair for one of me setups.

### ⭐⭐⭐⭐⭐ Works great!
*by A***R on August 4, 2025*

The blocks worked great to keep my work square. They allowed me to shift my work around on my drill press with my work clamped.

### ⭐⭐⭐⭐⭐ Very accurate I used them to stack on top of each other to level my planer.
*by J***E on August 9, 2025*

Worked great.

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**Shop now:** [https://www.desertcart.kr/products/607686746-123-blocks-matched-pair-23-holes-0002-precision-ground-machinist](https://www.desertcart.kr/products/607686746-123-blocks-matched-pair-23-holes-0002-precision-ground-machinist)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-26*