Overview
The Captains of Crush (CoC) Key: Miles to Mils is a precision-engineered measurement tool designed for serious grip strength athletes. Functioning like a "GPS for your grip training," this key allows users to accurately gauge the gap between the handles of their Captains of Crush Grippers. By measuring progress in precise increments, athletes can track their improvement toward a full closure, turning subjective "feels" into objective data.
Product Page: Captains of Crush Key at Rogue Fitness
Key Features and Specifications
Material: Handcrafted from high-quality aircraft-grade aluminum, matching the handles of the CoC Grippers.
Measurement Increments: Gauges progress in 2mm steps, specifically: 2mm, 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, and 16mm.
Specialty Measures: Includes additional 19mm and 54mm measurements for broader training benchmarks.
Dimensions: Overall length of 2.125 inches.
Manufacturing: Proudly Made in the USA by IronMind.
Compatibility: Designed specifically for use with the Captains of Crush Gripper series (sold separately).
Performance Benefits
Objective Tracking: Replaces guesswork with exact millimeter measurements, allowing you to see progress even when you haven't yet achieved a full closure.
Motivation: Seeing a 2mm improvement in your "gap" provides a psychological boost that helps sustain long-term training consistency.
Precision Training: Enables "block sets" or partial closure training where an athlete aims to hold the gripper at a specific, measured width.
Compact and Durable: The aircraft-grade aluminum construction ensures the key will not deform or wear down, maintaining its accuracy over a lifetime of use.
Maintenance and Care
Cleaning: Wipe with a clean, dry cloth to remove oil, sweat, or chalk. If the aluminum becomes dull, a light polish with a microfiber cloth will restore its finish.
Storage: Its small size makes it easy to lose; it is recommended to keep it in a small pouch or a specific pocket in your gym bag.
Avoid Impact: While durable, dropping the key on hard concrete may nick the edges, which could slightly affect the precision of the thinner measurement steps.
Warranty Information
The Captains of Crush Key is manufactured by IronMind Enterprises. Rogue Fitness facilitates a 30-day return policy for unused items in new condition. For specific manufacturing inquiries, the product is covered under IronMind’s standard quality assurance for training tools.
Frequently Asked Questions
Q: Do I need this if I can already close my gripper? A: Once you can consistently close a gripper, the key is less about "gauging the gap" and more about testing your strength on the next level up. It helps you see how close you are to conquering a higher-resistance CoC Gripper.
Q: Is it compatible with other brands of grippers? A: While it is specifically designed for the geometry of CoC Grippers, it can theoretically measure the gap on any torsion spring gripper, provided the handle design allows the key to fit.
Q: Why is it called "Miles to Mils"? A: It’s a play on the idea of long-distance progress (Miles) versus the tiny, precise measurements (Mils/Millimeters) required to master elite grip strength.
Q: Does it come with a case? A: The key is typically sold as a standalone object; most users store it alongside their grippers or on a keychain/lanyard.
Related Products
Captains of Crush Grippers (10 levels of resistance)