---
product_id: 766891308
title: "SOMELINE Mini-Fit Jr Connector Crimping Tool Kit, 18 Types 2-16 Pin 4.2mm Connectors with 24-16 AWG Terminals, Ratcheting Crimper, Compatible with Molex, for PC ATX EPS Power, 3D Printer & DIY"
brand: "someline"
price: "Bs.1307"
currency: BOB
in_stock: true
reviews_count: 13
category: "Someline"
url: https://www.desertcart.bo/products/766891308-someline-mini-fit-jr-connector-crimping-tool-kit-18-types
store_origin: BO
region: Bolivia
---

# Cross-compatible with Molex & Amphenol UL94V-0 flame-retardant nylon connectors 30-16 AWG ratcheting crimp range SOMELINE Mini-Fit Jr Connector Crimping Tool Kit, 18 Types 2-16 Pin 4.2mm Connectors with 24-16 AWG Terminals, Ratcheting Crimper, Compatible with Molex, for PC ATX EPS Power, 3D Printer & DIY

**Brand:** someline
**Price:** Bs.1307
**Availability:** ✅ In Stock

## Summary

> 🔧 Crimp like a pro, connect like a boss — never settle for less!

## Quick Answers

- **What is this?** SOMELINE Mini-Fit Jr Connector Crimping Tool Kit, 18 Types 2-16 Pin 4.2mm Connectors with 24-16 AWG Terminals, Ratcheting Crimper, Compatible with Molex, for PC ATX EPS Power, 3D Printer & DIY by someline
- **How much does it cost?** Bs.1307 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/766891308-someline-mini-fit-jr-connector-crimping-tool-kit-18-types)

## Best For

- someline enthusiasts

## Why This Product

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

## Key Features

- • **All-in-One Pro Kit:** Includes 18 connector types (2-16 pin), 24-16 AWG terminals, and a customizable double-layer storage box for ultimate organization.
- • **Flame-Retardant Durability:** Connectors molded from UL94V-0 nylon withstand extreme temps (-40°C to +105°C) and high current loads up to 13A.
- • **Precision Ratcheting Power:** Ensures perfect B-type crimps with calibrated force for reliable, gas-tight connections every time.
- • **Ergonomic Grip & Quick Release:** Non-slip TPR handles reduce fatigue; built-in lever lets you safely reset stuck terminals—DIY friendly and professional-grade.
- • **Industry-Leading Compatibility:** Seamlessly works with Molex Mini-Fit Jr. and Amphenol Minitek Pwr systems—future-proof your builds.

## Overview

The SOMELINE Mini-Fit Jr Connector Crimping Tool Kit is a professional-grade ratcheting crimper designed for 30-16 AWG terminals, compatible with industry-standard Molex and Amphenol connectors. Featuring flame-retardant nylon housings rated for up to 13A and operating temperatures from -40°C to +105°C, this ergonomic kit includes 18 connector types and a durable storage case, making it ideal for PC power supplies, 3D printers, automotive electronics, and complex DIY wiring projects.

## Description

SOMELINE 2542M hand crimping tool for Molex Mini-Fit Jr and Standard .062" crimp terminals. It can also be used for crimping Dupont 2.54mm and KF2510 connector terminals. When a crimping tool is used on a terminal, two crimps take place at the same time. One is the electrical connection between conductor and terminal. The other is the insulation crimp which provides strain relief against vibration and tension. Using a good quality crimping tool will ensure that a full, gas tight crimp is produced preventing future deterioration of the electrical connection and insulation breakage.Mini-Fit Jr. 4.2 mm plug and receptacle housings are made of UL94V-0 flame-retardant nylon with a secure latch. They are suitable for high-current, high-density wire-to-wire or wire-to-board applications such as consumer electronics, industrial equipment, and automotive electronics. Commonly used in PC Motherboard ATX and CPU EPS power supplies.Kit Configuration:2–16 Circuits Connectors24–16 AWG Pins30–16 AWG CrimperDouble-layer Storage BoxUser Manual

Review: Wonderful tool: here’s how I augmented it - I really like this crimping tool. The tool feels solid and ratcheting mechanism is smooth and satisfying when you clamp down on it. The tool case is very handy and has room to customize (for example, add just the connectors you need for the job to the top layer, or add additional items such as heat shrink tubes). I would suggest that if the lid had a little pocket for the instructions (or the key info, such as the Jaw table, were laminated on the lid that would be perfect. That said, here were my two life hacks to make this more useful to me (I’m new to the cable crimping world): #1) I cut the most important pieces of the manual (important for me to remember) and taped them to the lid and #2) I added some tweezers next to the crimping tool so I could better extract the tiny pieces from the lower tray.
Review: This is the one for JST type connectors. - This one works! I have gone through so many crimpers over the past 50 years, and this one will be my last. It works like a charm. Excellent quality for the price is unbeatable. Read the instructions! There is a correct way, and a wrong way to insert the connector.

## Features

- RATCHETING CRIMPER: Crimping range covers 30-16 AWG, engineered for Molex Mini-Fit Jr. 4.2 mm, Standard .062" 3.68 mm, Dupont 2.54 mm, and KF2510 terminals. The auto-adjusting ratchet ensures a standardized B-type (F-crimp) profile, applying calibrated force to both conductor and insulation grips to minimize contact resistance
- ELECTRICAL & MATERIAL SPECIFICATIONS: Includes 2-16 Pin 4.2mm pitch housings molded from flame-retardant Nylon 66 (UL 94V-0). Operating Temperature: -40°C to +105°C. Rated Current: 13A max. The 24-16 AWG terminals are manufactured from tin-plated copper/brass with dual locking tangs, offering high oxidation resistance and stable current delivery under mechanical vibration
- INDUSTRY STANDARD CROSS-COMPATIBILITY: Connectors are fully interchangeable with standard Molex Mini-Fit Jr. 4.2 mm (5557/5559/5556/5558) and Amphenol Minitek Pwr 4.2 systems. Designed for strict mating compatibility with existing industry-standard headers for both component replacement and new wire harness builds
- WIDE APPLICATION: Engineered for highly reliable wire-to-wire power delivery, the Mini-Fit Jr. 4.2 mm connectors are widely used in PC Motherboard ATX and CPU EPS power supplies. Additionally, they are ideal for complex multi-circuit wiring in industrial automation (PLC), HVAC control boards, 3D printers, e-bike BMS, automotive electronics, and arcade machine restorations
- ERGONOMIC & BEGINNER-FRIENDLY: Designed for efficiency without fatigue. The non-slip TRP handle provides a comfortable grip for prolonged use. Features a built-in Quick Release Lever that allows you to open the jaws safely if a terminal is misplaced or stuck, making it easy for both DIY hobbyists and professionals to achieve perfect results

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0FH68MGK2 |
| Best Sellers Rank | #11,306 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #38 in Crimpers |
| Brand | SOMELINE |
| Brand Name | SOMELINE |
| Color | White |
| Customer Reviews | 4.6 out of 5 stars 879 Reviews |
| Grip Type | Ergonomic |
| Handle Material | Polypropylene(PP)+Thermoplastic Rubber(TPR) |
| Handle Type | Ergonomic |
| Included Components | 4.2mm Pitch Connectors Crimping Tool Kit |
| Manufacturer | SOMELINE |
| Manufacturer Part Number | 2542M-21 |
| Model Number | 2542M-21 |
| Set Name | 4.2mm (Mini-Fit Jr) |
| Size | 4.2mm |
| Specific Uses For Product | Electronic systems and devices, power and signal connections |
| Unit Count | 1 Count |

## Product Details

- **Brand:** SOMELINE
- **Color:** White
- **Grip Type:** Ergonomic
- **Handle Material:** Polypropylene(PP)+Thermoplastic Rubber(TPR)
- **Handle Type:** Ergonomic

## Images

![SOMELINE Mini-Fit Jr Connector Crimping Tool Kit, 18 Types 2-16 Pin 4.2mm Connectors with 24-16 AWG Terminals, Ratcheting Crimper, Compatible with Molex, for PC ATX EPS Power, 3D Printer & DIY - Image 1](https://m.media-amazon.com/images/I/817Kje566QL.jpg)
![SOMELINE Mini-Fit Jr Connector Crimping Tool Kit, 18 Types 2-16 Pin 4.2mm Connectors with 24-16 AWG Terminals, Ratcheting Crimper, Compatible with Molex, for PC ATX EPS Power, 3D Printer & DIY - Image 2](https://m.media-amazon.com/images/I/81A2590ClWL.jpg)
![SOMELINE Mini-Fit Jr Connector Crimping Tool Kit, 18 Types 2-16 Pin 4.2mm Connectors with 24-16 AWG Terminals, Ratcheting Crimper, Compatible with Molex, for PC ATX EPS Power, 3D Printer & DIY - Image 3](https://m.media-amazon.com/images/I/81XpBplPwvL.jpg)
![SOMELINE Mini-Fit Jr Connector Crimping Tool Kit, 18 Types 2-16 Pin 4.2mm Connectors with 24-16 AWG Terminals, Ratcheting Crimper, Compatible with Molex, for PC ATX EPS Power, 3D Printer & DIY - Image 4](https://m.media-amazon.com/images/I/71iUb9GchVL.jpg)
![SOMELINE Mini-Fit Jr Connector Crimping Tool Kit, 18 Types 2-16 Pin 4.2mm Connectors with 24-16 AWG Terminals, Ratcheting Crimper, Compatible with Molex, for PC ATX EPS Power, 3D Printer & DIY - Image 5](https://m.media-amazon.com/images/I/81EuvEsInAL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Wonderful tool: here’s how I augmented it
*by A***H on August 2, 2026*

I really like this crimping tool. The tool feels solid and ratcheting mechanism is smooth and satisfying when you clamp down on it. The tool case is very handy and has room to customize (for example, add just the connectors you need for the job to the top layer, or add additional items such as heat shrink tubes). I would suggest that if the lid had a little pocket for the instructions (or the key info, such as the Jaw table, were laminated on the lid that would be perfect. That said, here were my two life hacks to make this more useful to me (I’m new to the cable crimping world): #1) I cut the most important pieces of the manual (important for me to remember) and taped them to the lid and #2) I added some tweezers next to the crimping tool so I could better extract the tiny pieces from the lower tray.

### ⭐⭐⭐⭐⭐ This is the one for JST type connectors.
*by T***M on May 5, 2026*

This one works! I have gone through so many crimpers over the past 50 years, and this one will be my last. It works like a charm. Excellent quality for the price is unbeatable. Read the instructions! There is a correct way, and a wrong way to insert the connector.

### ⭐⭐⭐⭐⭐ Best Tool/Kit - Amazing Quality
*by I***S on June 16, 2026*

The tool itself is amazing quality. Looks good, feels heavy, and all the parts are made really well. It crimps great and is easy to use. The plastic box fits everything great and keeps the little bits separate which most fail to do. Only complaint is the 2 orange latches pop off easily sometimes when you open it but I’m not concerned with it happening in storage or transport. Overall it’s a great kit and I am super impressed.

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*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-10-11*