Captains of Crush Hand Gripper No.4


2 in stock (can be backordered)

No. 4: The top of the ladder. Nobody has been certified on this gripper since Magnus Samuelsson in 2004*–who will be next?  Only 5 people in the World have been able to fully close the CoC No.4 under Certification Guidelines.

Captains of Crush Gripper No. 4 – 365 lb. (166kg)

*Visit the IronMind website at for complete details on how to certify.

2 in stock (can be backordered)


Not sure which captains of Crush Gripper to get?  Watch this video!

Captains of Crush Gripper No.4 – Top of the Range!

Known around the world as the gold standard for building and testing hand strength, IronMind Captains of Crush Grippers are the single most important grip strength tool you can choose–for the fastest route to the strongest grip.

What’s special about Captains of Crush Grippers?

  • the gold standard of grippers: original, authentic, unmatched
  • the single best grip training tool
  • perfect fit with CoC compatible grip tools for maximum progress in minimum time
  • knurled aircraft-grade aluminum handles, pioneered by CoC grippers in 1995
  • proprietary GR8 springs, only on CoC Grippers and IMTUGs: precise, durable, good-looking
  • a 20-year history of product development and refinement
  • precision manufacturing for world-class performance: top-drawer build quality
  • top-selling, top-rated grippers at Amazon, year after year
  • no-surprise geometry: you can count on the consistency and precision of Captains of Crush Grippers
  • 11 strengths for a perfect fit with Captains of Crush Gripper No.4 being the hardest gripper to close
  • certification on the top-tier CoCs
  • Made by IronMind in the USA.

Additional information

Weight385 g
Dimensions200 × 100 × 50 mm


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