---
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: "419449CFA"
currency: XOF
in_stock: true
url: https://www.desertcart.sn/products/276315662-jmm-tech-inc-big-self-centering-coin-ring-punch-set
store_origin: SN
region: Senegal
---

# 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:** 419449CFA
**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?** 419449CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/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

This newly designed set, domed and threaded lid includes highest quality two piece punch body; made out of heat treated tool steel for maximum durability. The top and the bottom lid punch body is domed and threaded to center all coins ranges from approximately US quarter dollars 1" ( 24 mm diameter) up to 2" (50mm) diameter coin. This new design makes it much easier to get consistent centered holes in your punched coins. Set includes five different hole punches, sizes 1/4", 3/8", 1/2" 5/8" and 3/4 " with updated die design clearance that allows coin punch outs to clear the dies. This is the highest quality coin ring punch set made to last and surpass your expectations. Top and bottom are made out of alloy steel, punches and dies are made out of heat treaded tool steel so you can make sure they will least long time. Made in the USA. Instructions on how to use this product are included in every set. Returns accepted as long as the item is NOT damaged in the original condition, buyers pays return shipping.

## 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

- **Material:** hardened tool steel, 4140 steel, tool steel
- **Colour:** Clear
- **Brand:** JNAB
- **Item weight:** 1.51 Kilograms
- **Operation mode:** Manual

## 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/71P99XNpIKL.jpg)
![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 2](https://m.media-amazon.com/images/I/61MnlyYyHLL.jpg)
![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 3](https://m.media-amazon.com/images/I/61hDTaSZoYL.jpg)
![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 4](https://m.media-amazon.com/images/I/71gCAmEpomL.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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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-02-26*