---
product_id: 727674128
title: "IWISS Crimping Pliers for JST Connectors, Ratchet Type, Open Barrel, 0.001-0.02 in (0.03-0.5 mm2) (IWS-3220M)"
brand: "iwiss"
price: "VT11854"
currency: VUV
in_stock: true
reviews_count: 5
category: "Iwiss"
url: https://www.desertcart.vu/products/727674128-iwiss-crimping-pliers-for-jst-connectors-ratchet-type-open-barrel
store_origin: VU
region: Vanuatu
---

# 7.7-inch precision length Multi-die sizes for versatile crimps Unique ratchet mechanism IWISS Crimping Pliers for JST Connectors, Ratchet Type, Open Barrel, 0.001-0.02 in (0.03-0.5 mm2) (IWS-3220M)

**Brand:** iwiss
**Price:** VT11854
**Availability:** ✅ In Stock

## Summary

> 🔧 Master your connections with precision and ease!

## Quick Answers

- **What is this?** IWISS Crimping Pliers for JST Connectors, Ratchet Type, Open Barrel, 0.001-0.02 in (0.03-0.5 mm2) (IWS-3220M) by iwiss
- **How much does it cost?** VT11854 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/727674128-iwiss-crimping-pliers-for-jst-connectors-ratchet-type-open-barrel)

## Best For

- iwiss enthusiasts

## Why This Product

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

## Key Features

- • **Dual Barrel Crimping:** Simultaneously crimps core wire and insulation for secure, lasting connections.
- • **Precision Engineering:** EDM-processed dies deliver superior hardness and elasticity for professional-grade results.
- • **Ergonomic & Lightweight:** Compact 7.7-inch design weighing just 10.6 oz for fatigue-free, all-day use.
- • **Flawless Crimps Every Time:** Ratcheting mechanism ensures consistent, reliable crimps with zero guesswork.
- • **Versatile Wire Compatibility:** Supports wire sizes from 0.03 to 0.5 mm², covering a broad range of JST connector needs.

## Overview

The IWISS IWS-3220M Crimping Pliers are a professional-grade tool designed for flawless crimping of JST connectors. Featuring a unique ratchet mechanism and EDM-processed dies, these pliers deliver consistent crimps on wire sizes from 0.03 to 0.5 mm². Lightweight and ergonomic, they enable efficient dual barrel crimping, making them an essential tool for any serious DIYer or professional technician.

## Description

desertcart.co.jp: IWISS Crimping Pliers for JST Connectors, Ratchet Type, Open Barrel, 0.001-0.02 in (0.03-0.5 mm2) (IWS-3220M) : DIY, Tools & Garden

Review: Possibly early days to be boasting of 100% success rate with these, but I've crimped about 20 connections so far and they have all worked ! I spent a long time trying to get my previous crimper (SN-28B copy) to crimp anything and they almost always failed; this crimper on the other hand has produced perfect crimps every time ! Be aware that there were no instructions supplied with this item, which was a little annoying, but if you look at the "Crimping Guidance" image accompanying the listing you'll see how the barrels need to be inserted into the crimper and from there it's fairly straightforward. I would advise that you prepare the barrels beforehand by making sure that the "wings" are parallel to each other (as supplied, mine tended to be splayed a little too far) and then insertion into the crimper is a whole lot easier. I think the crucial thing about these crimpers is that they "fold" the wings onto the sheathing and therefore bring everything in together nicely. Excellent product!
Review: na een korte inloopperiode wordt deze ratelkrimptang een handige stuk gereedschap. Een beschrijving van het gebruik van de tang zou handig zijn.

## Features

- Total Length: 7.7 inches (195 mm); Weight: 10.6 oz (
- Width of each dice: 1.0mm, 1.3mm, 1.6mm, 1.9mm
- Each reference wire outer diameter: 0.08 - 0.01 inches (0.20 - 0.32 mm), 0.01 - 0.02 inches (0.51 - 0.64 mm), 0.02 - 0.03 inches (0.51 - 0.81 mm)
- For each reference wire size: 0.03-0.08mm², 0.08-0.21mm², 0.21-0.33mm², 0.21-0.52mm²
- Features: 1. Unique ratchet mechanism and vertical moving die for reliable crimping 2. Due to EDM processing, the dice has a high elastic coefficient and hardness. 3. Crimp wire (wire barrel) and coating (insulation barrel) simultaneously

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B078WPT5M1 |
| Amazon Bestseller | #109,754 in DIY, Tools & Garden ( See Top 100 in DIY, Tools & Garden ) #288 in Crimpers |
| Brand Name | IWISS |
| Color | Mixed Colors, orange |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,284) |
| Cutting width | 0.03 Millimeters |
| Grip Type | Ergonomic |
| Handle Material | Thermoplastic Elastomer (TPE) |
| Item Weight | 300 Grams |
| Manufacturer | IWISS(アイウィス) |
| Manufacturer Part Number | IWS-3220M |
| Model Number | IWS-3220M |
| Size | IWS-3220M |
| Specific Uses For Product | For assembly, repair and maintenance of electronic components |
| UPC | 680491199492 |

## Product Details

- **Brand:** IWISS
- **Color:** Mixed Colors, orange
- **Grip Type:** Ergonomic
- **Handle Material:** Thermoplastic Elastomer (TPE)
- **Item Weight:** 300 Grams

## Images

![IWISS Crimping Pliers for JST Connectors, Ratchet Type, Open Barrel, 0.001-0.02 in (0.03-0.5 mm2) (IWS-3220M) - Image 1](https://m.media-amazon.com/images/I/51dedm3GiLL.jpg)
![IWISS Crimping Pliers for JST Connectors, Ratchet Type, Open Barrel, 0.001-0.02 in (0.03-0.5 mm2) (IWS-3220M) - Image 2](https://m.media-amazon.com/images/I/61u6-DLTiAL.jpg)
![IWISS Crimping Pliers for JST Connectors, Ratchet Type, Open Barrel, 0.001-0.02 in (0.03-0.5 mm2) (IWS-3220M) - Image 3](https://m.media-amazon.com/images/I/71BUzWFiF8L.jpg)
![IWISS Crimping Pliers for JST Connectors, Ratchet Type, Open Barrel, 0.001-0.02 in (0.03-0.5 mm2) (IWS-3220M) - Image 4](https://m.media-amazon.com/images/I/71+c1JJIHwL.jpg)
![IWISS Crimping Pliers for JST Connectors, Ratchet Type, Open Barrel, 0.001-0.02 in (0.03-0.5 mm2) (IWS-3220M) - Image 5](https://m.media-amazon.com/images/I/71WKmcoAjWL.jpg)

## Questions & Answers

**Q: ギボシ端子に使用できますか？**
A: 使用できません。肉厚の為、カシメ形状が良くありません。個別圧着ペンチIWS-1440L、同時圧着ペンチIWS-0520B（矢崎ギボシにはHS-03BC）をご検討ください。

**Q: 平型端子に使用できますか？**
A: エーモン、矢崎、住友電装、日圧(JST)、ヒロセなどの国内メーカー品には使用できません。肉厚の為、カシメ形状が良くありません。個別圧着ペンチIWS-1440L、同時圧着ペンチIWS-0520Bをご検討ください。

**Q: 圧着工具（新品）のハンドル動作がかたい。正常ですか？**
A: 新品の場合、リングやピンがかたいことは正常です。しばらくお使いいただくことで少しずつなじみ、軽くなります。

**Q: ラチェット構成品ですか。**
A: ラチェット内蔵品です。

**Q: ハンドルが開かない時の解除方法は？**
A: ハンドルを強く握りこみ、電線とリングスリーブを押し潰すことで、ハンドルを解除することができます。ハンドルの外側方向（開く方向）には絶対に力を加えないでください。 手順① 工具を逆さまに持ち替え、両手でハンドルの先を握る 手順② ハンドルを両手で強く握り続ける 手順③ 緊急解除レバーをドライバーで動かしてみる。電線が固定されていても、誤ったダイスで圧着した端子・電線は使用できません。再度、正しい組み合わせで圧着作業を行ってください。

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by I***P on March 22, 2024*

Possibly early days to be boasting of 100% success rate with these, but I've crimped about 20 connections so far and they have all worked ! I spent a long time trying to get my previous crimper (SN-28B copy) to crimp anything and they almost always failed; this crimper on the other hand has produced perfect crimps every time ! Be aware that there were no instructions supplied with this item, which was a little annoying, but if you look at the "Crimping Guidance" image accompanying the listing you'll see how the barrels need to be inserted into the crimper and from there it's fairly straightforward. I would advise that you prepare the barrels beforehand by making sure that the "wings" are parallel to each other (as supplied, mine tended to be splayed a little too far) and then insertion into the crimper is a whole lot easier. I think the crucial thing about these crimpers is that they "fold" the wings onto the sheathing and therefore bring everything in together nicely. Excellent product!

### ⭐⭐⭐⭐⭐ Review
*by I***S on December 3, 2024*

na een korte inloopperiode wordt deze ratelkrimptang een handige stuk gereedschap. Een beschrijving van het gebruik van de tang zou handig zijn.

### ⭐⭐⭐⭐⭐ Review
*by D***. on May 21, 2025*

I tested this on the Molex SL crimp contacts (for the 0.100" square headers) and JST XH contacts (the typical LiPo battery balance connector) on 22AWG PVC wire. The 1.6mm opening works with the Molex SL and 2.0mm MOSTLY works with the JST XH. The caveat with the JST XH is that the insulation grips are crimped to be slightly too wide to fit into the crimp housing so you have to take a pair of pliers and ever so slightly squish it sideways. I looked at the crimps under a microscope and both the conductor and insulation fingers looked neatly and cleanly rolled for both types of contacts. I did pull tests but don't have a force scale nor the official pull-force test pliers from Molex. What I did was pull on the connector in a vise until the wire came out and then pulled on a luggage scale in the vice until it felt the same. I don't know what the JST XH spec is but the Molex SL spec is 8.82lbs for 22AWG. Therefore I used that specification for both connectors. My test runs for the Molex SL resulted in 50%, 75%, and 150% of the specified pull force. The test runs for the JST XH resulted in 50%, 60% and 100%. I am not sure how consistent the official crimper would be. I should also add that even though it does not have a positioner like the official tools, the die is of the proper thickness for the both Molex SL and JST XH so all you have to do is line up the end of the crimp (wire-side) with the edge of the die. So no need to position the crimp contact midway in the die. The parallel jaws and EDM cut die make a huge difference for these tiny contacts where any mos-positioning of the crimp terminal in the die, or inaccuracy in the die matters a lot more. The parallel jaws come straight down on the crimp contact which makes crimping much less of a hassle because the crimp terminal is much more likely to stay in position. With plier-type crimpers, the hinged jaws roll and tilt the crimp contact as it comes down. You can get away with a little tilt in larger contacts but with tiny contacts a little tilt throws things off a lot more and destroys the crimp. So other than having no positioner and needing a second slightly squeeze from the side for the JST XH contacts, you save But other than that it works at saves $500+ from the official crimp tools.

## Frequently Bought Together

- iCrimp IWS-3220M Micro Connector Pin Crimping Tool 0.03-0.52mm² 32-20AWG Ratcheting Crimper for D-Sub,Open Barrel suits Molex,JST,JAE
- Taiss 580PCS JST PH Connector kit 2.0mm 2/3/4/5/6Pin Housing,Female and Male Adapter Cable Connector Plug,PH2.0mm Female Pin Connectors,JST Connector F-066-580PCS
- CQRobot JST XH 2.54 mm Pitch 5-Pin/6-Pin/7-Pin Electronic Connector IC Male Plugs, Female Sockets Housing and T-Shaped Crimp Terminal Kit. 60 Sets/480 Pieces Wire-to-Board Adapter Cable Assembly.

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-16*