korean adjustable grip

The Korean version is coming, have you used it? 2-10KGS
1. New plastic grip strength trainer with foam handle for soft and comfortable grip.
2. Unique push-piece design allows for easy adjustment of training intensity
Recovery of injured fingers after 3, establishing repetitive muscle memory, enhancing agility.
4. Relieve tension and stress, exercise finger dexterity
5. Strengthen the fingers and prevent mouse hand, improve the strength of the palm, fingers, wrists, and forearms.
Ten minutes a day, left-hand practice can stimulate the potential of the right brain!