Captains of Crush
The best training equipment for putting hard lean muscle on the forearms in the shortest time possible! These grippers are the real deal! Anyone who thinks their grip is strong enough, should give these a try.
Here is a quick breakdown of the grippers and their difficulty level:
Trainer: 100 lb pressure
Number One: 140 lb pressure
Number Two: 195 lb pressure
Number Three: 280 lb pressure
Number Four: 360 lb pressure
To put things in perspective, fewer than 100 men in the world have successfully closed the number three gripper with one hand. Most guys can't close the number one on the first try and fewer will close the number two. So far, Only ONE man named JB Kinney has closed the number four gripper under authenticated conditions. Click Here
IMTUG
Made by IronMind again, aimed to target the smaller muscles within the hand. These are much comfier than the standard Captains Of Crush and a lot more forgiving to hand. Ideal for targeting muscles you never knew you had. Click Here
Super Gripper
The most common Extension gripper is the Ivanko Super Gripper. This gripper is approximately the size of a pad of paper and provides an almost unlimited range of difficulty for little more than the cost of a single torsion spring gripper. Not as popular as the Captain of Crush Grippers, largely due to complaints over the comfort of the handle but still very effective for people with harder hands. Click Here
Gripmaster
Great for climbers and many others sports requiring endurance strength. The Gripmaster works to improve strength, endurance and coordination of all the muscles within the hand and most muscles and tendons in the forearm. It conditions the fingers, hand, wrist and forearm and is small enough to fit in your pocket. Click Here
Power Putty
Power putty can be squeezed, stretched, pinched, and pulled to provide exercises for strengthening the muscles of the fingers, hand, wrist, and forearm. Effortless to train with, works the fingers in a full range of motion from closure to extension, stress relieving too! Click Here






