I have a Scramble grip trainer that I have attached to a band off of my pull up bar that can be adjusted to just a tad higher than shoulder height. I do rotational "chops" with various grips like pistol, spider sleeve and collar. I swear my mid section after incorporating this into my existing program is getting carved af and strong. The best thing about this exercise is the farther I'm away from the bar, the more resistance. So I can essentially work on grip strength, rotationals and endurance with this little peice of kit. I love it so much I bought a couple more to give away as gifts. Cheers!🍻🤙