Grip Strength is a very important factor of fitness, often overlooked. A strong hand grip is important in any fitness discipline, but especially in calisthenics. A popular saying states that “A chain is only as strong as its weakest link“. Pull-ups, battle rope, dips, bar assisted leg raises etc – all require a strong and firm hand grip in order to be carried out correctly. Don’t let your hands be the weakest link. The Adjustable Hand Grip Strengthener lets you focus on straightening your hand grip so you could perform better on the more complex stuff.