aa small spring grip spring spring grip finger training rehabilitation fitness small equipment

Dumbbell, also known as hand strength, finger strength, and force meter

Use single-handed, double-handed, upper grip, lower grip, double clamping, and other different methods.ExerciseMethod. Small and light in volume, easy to carry.convenientIt can be used at any time without any restrictions, and it can exercise your hand strength and make your muscles firm and strong at any time.MuscleLong-term use can help prevent diseases such as rheumatoid arthritis and is a must-have small exercise equipment for fitness.