Oh yeah, I forgot levering. I have an 8lb and 10lb sledge, and some homemade sledge type things.
I've been doing a forced adaptation program specifically for grippers, so I haven't been able to do anything else very much the last few weeks which sucks. But, after taking a couple days off the program and testing my strentgh, I slammed the #3 like the trainer and held it for nearly 10 seconds. The program, and the results are both pretty cool, but I want to finish it up and get back to overall grip training.