RE: Hand Grips
when I got the HG100 I could close it with my right about 3times and 0times with my left. After a few months managed to get up to 20reps on each side. Bought the 150 and could close it at all. Can probably bash out 6reps a side now and thats 4months later.
I'd say unless you have done grip training previously or your naturally massive you wont be able to close the 150.
225K Deadlift My Journal