Captains of Crush Hand Gripper
If you could choose only one grip training tool, this is it, Captains of Crush are the gold standard of grippers and are designed to give you the biggest gains in the shortest time. This is the gripper that changed the world as it took what had largely been a plastic plaything and turned it into a grip training tool that is serious, high-quality, and suitable for everyone from rank beginners to World's Strongest Man winners. Legendary design and build quality, with 11 strengths to choose from. Perfect for standalone training or used in conjunction with Zenith or IMTUG grippers, also from IronMind. Comes with complete training information, backed by IronMind's expert, ready-to-assist-you customer service.  If you would prefer a gripper without knurled handles, IronMind recommends its Zenith gripper.