Gripper Certifications > Active Certifications > Captains of Crush Certification

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Captains of Crush (CoC) Certification

The Captains of Crush (CoC) Certification is one of the most recognized grip strength achievements in the world. Administered by IronMind, this certification challenges athletes to close some of the toughest grippers, including the CoC No. 3, No. 3.5, and No. 4. The certification process is open to men and women, with specific grippers for each gender.

Levels of Certification

Athletes can certify on the following Captains of Crush Grippers:

  • CoC No. 3
  • CoC No. 3.5
  • CoC No. 4
  • CoC No. 2 (Women Only)
  • CoC No. 2.5 (Women Only)

Each level represents a significant milestone in grip strength training.

Certification Process

To achieve certification:

  1. Apply to Certify: Athletes contact IronMind to express readiness.
  2. Close the Gripper: The gripper must be closed following IronMind’s strict rules, including video-based certifications.
  3. Verification: Submit proof of the close, such as video evidence, for IronMind’s review.

The full set of rules and guidelines can be found on IronMind’s official certification page.

Notable Certified Athletes

IronMind maintains a list of athletes who have been certified for closing these grippers:

For more details on how to certify, visit the official IronMind rules page.

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