---
product_id: 1733132
title: "Captains of Crush (CoC) Key Grip Strengthening Tool | Measure gripper closing progress and track improvement in grip strength training"
brand: "ironmind"
price: "$38.27"
currency: USD
in_stock: true
reviews_count: 8
category: "Iron Mind"
url: https://www.desertcart.us/products/1733132-captains-of-crush-coc-key-grip-strengthening-tool-measure-gripper
store_origin: US
region: United States of America
---

# Precision gap measurement in mm Specifically designed for CoC grippers Made in USA, premium quality Captains of Crush (CoC) Key Grip Strengthening Tool | Measure gripper closing progress and track improvement in grip strength training

**Brand:** ironmind
**Price:** $38.27
**Availability:** ✅ In Stock

## Summary

> 📏 Unlock your grip’s full potential—measure, master, and dominate!

## Quick Answers

- **What is this?** Captains of Crush (CoC) Key Grip Strengthening Tool | Measure gripper closing progress and track improvement in grip strength training by ironmind
- **How much does it cost?** $38.27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/1733132-captains-of-crush-coc-key-grip-strengthening-tool-measure-gripper)

## Best For

- ironmind enthusiasts

## Why This Product

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

## Key Features

- • **Grip GPS:** Know exactly where you stand on your grip journey and close the gap with confidence.
- • **Proudly American-Made:** Built in the USA by IronMind, the gold standard in grip training since 1988.
- • **Turn Misses into Wins:** Transform partial closes into actionable feedback and accelerate your grip gains.
- • **Pinpoint Your Progress:** Track grip strength improvements down to 2 mm increments for laser-focused training.
- • **Engineered for Champions:** Crafted from aircraft-grade aluminum to perfectly fit Captains of Crush grippers.

## Overview

The Captains of Crush Key is a precision gap measurement tool designed exclusively for CoC grippers. Made from aircraft-grade aluminum in the USA, it provides incremental feedback from 2 to 54 mm, enabling athletes to track and accelerate their grip strength progress with unmatched accuracy.

## Description

desertcart.com : Captains of Crush (CoC) Key Grip Strengthening Tool | Measure gripper closing progress and track improvement in grip strength training : Hand Strengtheners : Sports & Outdoors

Review: 6/5 if I could - Best purchase of my life. Game changer for measuring and making progress on grippers I either can’t close yet or don’t feel comfortable closing for multiple reps.
Review: Tool - An important CoC tool for serious gripping achievements

## Features

- Takes the guesswork out of your grip training
- Hit pay dirt even when you can't fully close your grippers
- Progressively close the gap until you can touch the handles
- Specifically designed for Captains of Crush Grippers
- Precision quality, made in the USA

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001NFYTVW |
| Best Sellers Rank | #226,247 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #536 in Strength Training Grip Strengtheners |
| Brand | IronMind |
| Brand Name | IronMind |
| Color | Silver |
| Customer Reviews | 4.4 out of 5 stars 56 Reviews |
| Item Dimensions L x W | 2.13"L x 2.13"W |
| Item Shape | Cylinder |
| Item Weight | 0.04 kg |
| Manufacturer | IronMind Enterprises, Inc. |
| Material | Aluminum |
| Model Number | 1440 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 1440 |
| Style | gap measurement tool for grippers |
| Tension Level | Heavy |
| Tension Supported | Heavy |
| UPC | 696747096972 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** IronMind
- **Color:** Silver
- **Material:** Aluminum
- **Style:** gap measurement tool for grippers
- **Tension Level:** Heavy

## Images

![Captains of Crush (CoC) Key Grip Strengthening Tool | Measure gripper closing progress and track improvement in grip strength training - Image 1](https://m.media-amazon.com/images/I/71GHQdnXXLL.jpg)

## Questions & Answers

**Q: What is the purpose of this?**
A: The purpose is for grip training with Captains of Crush (CoC) grippers.  It takes the guesswork out of grip training.  You can see a diagram and get more info here: https://www.amazon.com/dp/B001NFYTVW/

## Customer Reviews

### ⭐⭐⭐⭐⭐ 6/5 if I could
*by J***T on September 21, 2024*

Best purchase of my life. Game changer for measuring and making progress on grippers I either can’t close yet or don’t feel comfortable closing for multiple reps.

### ⭐⭐⭐⭐⭐ Tool
*by T***R on September 7, 2023*

An important CoC tool for serious gripping achievements

### ⭐⭐⭐⭐ The Key to knowing where you are at.
*by M***Y on October 11, 2023*

This high quality product is a great addition to anyone's grip training program. This is a must have to determine and track goals of being able to close the COCs'. It always provides a unbiased uniform method of tracking advancement and progress toward success of closing the COC Grippers. The product is well made and durable in structure and is the perfect size to carry in your gym back, or in your EDC pack. The fit and finish is the quality that you could expect for IronMind product.

## Frequently Bought Together

- Captains of Crush (CoC) Key: The Key to Building a Stronger Grip
- IronMind Captains of Crush (COC) Hand Gripper - The Gold Standard of Grippers | The World's Leading Hand Strengthener
- IronMind Expand-Your-Hand Bands 10 Pack: Kiss Elbow Pains Goodbye - Prevent, Rehab, Reduce Pain from Tennis Elbow, Carpal Tunnel. Authentic, original, effective

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.us/products/1733132-captains-of-crush-coc-key-grip-strengthening-tool-measure-gripper](https://www.desertcart.us/products/1733132-captains-of-crush-coc-key-grip-strengthening-tool-measure-gripper)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-09-05*