---
product_id: 276315662
title: "JMM Tech Inc Big Self Centering Coin Ring Punch Set, No Spacers Needed, 1/4\" 3/8\" 1/2\" 5/8\" 3/4\" Punch Sizes"
brand: "jnab"
price: "€ 595.03"
currency: EUR
in_stock: true
category: "Jnab"
url: https://www.desertcart.pt/products/276315662-jmm-tech-inc-big-self-centering-coin-ring-punch-set
store_origin: PT
region: Portugal
---

# Domed & threaded design for perfect self-centering Five precise punch sizes from 1/4" to 3/4" Heat-treated tool steel for max durability JMM Tech Inc Big Self Centering Coin Ring Punch Set, No Spacers Needed, 1/4" 3/8" 1/2" 5/8" 3/4" Punch Sizes

**Brand:** jnab
**Price:** € 595.03
**Availability:** ✅ In Stock

## Summary

> 🎯 Punch Perfect Rings Like a Pro – Centered, Durable, Effortless!

## Quick Answers

- **What is this?** JMM Tech Inc Big Self Centering Coin Ring Punch Set, No Spacers Needed, 1/4" 3/8" 1/2" 5/8" 3/4" Punch Sizes by jnab
- **How much does it cost?** € 595.03 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/276315662-jmm-tech-inc-big-self-centering-coin-ring-punch-set)

## Best For

- jnab enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Crafted from heat-treated 4140 tool steel, engineered for long-lasting performance.
- • **Made in the USA:** Proudly manufactured domestically, ensuring top-tier quality and craftsmanship.
- • **No Spacers Needed:** Innovative design eliminates the hassle of spacers, streamlining your workflow.
- • **Precision Perfected:** Domed and threaded punch lids guarantee flawlessly centered holes every time.
- • **Versatile Size Range:** Includes five punch sizes (1/4", 3/8", 1/2", 5/8", 3/4") to fit all your coin ring projects.

## Overview

The JMM Tech Inc Big Self Centering Coin Ring Punch Set features a domed and threaded design that self-centers coins from 1" to 2" diameter, eliminating the need for spacers. Made from heat-treated 4140 tool steel, this durable five-piece punch set offers precise hole sizes from 1/4" to 3/4", delivering consistent, professional results for coin ring crafting. Proudly made in the USA, it’s engineered for longevity and ease of use.

## Description

JMM Tech Inc Big Self Centering Coin Ring Punch Set, No Spacers Needed, 1/4" 3/8" 1/2" 5/8" 3/4" Punch Sizes : desertcart.ae: Arts & Crafts

## Features

- Domed and Threaded Centering Punch Set
- 5 Different Punch Sizes
- No Spacers Needed
- Biggest Coin Size 2" or 50mm
- 1/4" 3/8" 1/2" 5/8" 3/4" Punch Sizes

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | JMM Technology Inc. |
| Part number | 730 |
| Item Weight | 1.51 Kilograms |
| Package Dimensions | 13.8 x 13.5 x 11.8 cm; 1.51 kg |
| Item model number | 730 |
| Color | Clear |
| Material | hardened tool steel, 4140 steel, tool steel |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** JNAB
- **Colour:** Clear
- **Hole count:** 5
- **Item weight:** 1.51 Kilograms
- **Material:** hardened tool steel, 4140 steel, tool steel

## Images

![JMM Tech Inc Big Self Centering Coin Ring Punch Set, No Spacers Needed, 1/4" 3/8" 1/2" 5/8" 3/4" Punch Sizes - Image 1](https://m.media-amazon.com/images/I/61EnjeOt+5L.jpg)

## Questions & Answers

**Q: Question for the seller: Can I substitute a 7/16" punch in place of the 3/4"?**
A: Depending on what you are punching this may be a mistake.

The increased clearance in the parts could lead to the punch getting stuck and you will definitely have more deformation than normal in the parts.  There will be a big burr to trim if it goes ok.

**Q: What is the smallest size (diameter) coin that can be used?**
A: This is great punch and it will do Us Dimes with smallest punches

**Q: Can i use a hammer with this?**
A: You could but by hammering may misshape the end ,thus taking away the ability to flip the coin and punch over to tap the coin off of the punch. I use a 150.00 press. Well worth the investment, it makes ring production fun and not a chore, which is how it should be...

**Q: Hard to get coin of after punching, any solutions?**
A: I found using a little oil before you punch it helps and you might have to spray it again after as well.

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**Shop now:** [https://www.desertcart.pt/products/276315662-jmm-tech-inc-big-self-centering-coin-ring-punch-set](https://www.desertcart.pt/products/276315662-jmm-tech-inc-big-self-centering-coin-ring-punch-set)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-09-03*