I've been training my crush grip strength for approx. four months now. After purchasing my first inexpensive adjustable hand gripper I couldn't even close its maximum setting of 60 kg/~132 lb. Fortunately, a couple months ago I saw great improvement and 60 kg is a walk in the park now.

Then I decided to purchase three grippers similar to the CoC grippers:

• 68 kg/~150 lb (similar to CoC no. 1)
• 90 kg/~200 lb (similar to CoC no. 2)
• 112 kg/~250 lb (sort of bridge between CoC no. 2.5 and 3)

Obviously, I am unable to close the last one. Though I can close the 90 kg. Thing is, I feel like I've hit a plateau. Progress has been tremendously slow and some days I can't even close the 90 kg. I'd love it if I could close the 112 kg this year. Just unsure what it takes to get there.

Also, online I saw that the avg. male grip strength my age is 45.36 kg/100 lb. That'd mean my grip strength is above avg. Still, I cannot help but think that 90 kg is pretty mid. I want to improve, but I don't know how.

Does anyone have experience in how to see the best results? How to move away from the 90 kg and get to the goal of 112 kg?

TLDR; Been training crush grip strength for four months. Saw great progress first couple of months, but have now plateaued at 90 kg/~200 lb. Want to close a 112 kg/~250 lb this year but not sure how and whether that's even realistic.