I closed the #4 not too long ago ( not video taped ). I started with the Heavy grips and closed up to 350. I'll tell you this. WHen I started I closed the 200 with ease 15 times. Then tried the 250 and only got 2 reps, I couldn't even budge the 300s. I worked on my grip by pinching weight, wrist curls, bar with string and wieght and closed the 350s after a year. I then got the captains of CRUSH I never did a verified test because I do it for myself and not to join some group of hand crunchers.