This is a 2.07 X BW overhand axle deadlift. There is only one man in the world who I know of who has a stronger ratio, his is 2.08 X BW. Getting stronger, faster.
Training with a thick bar is one of the best ways to build more grip strength. The very simple act of switching out your normal bar for a 2″ or larger diameter or a pair of FatGripz handles can make a huge impact in your open hand strength gains, forearm muscularity, and even thumb. In my opinion training with the axle is one of the very best choices you can make if you want stronger hands and arms.