type1 - handtrainer
type2 - handgripper
Type - GrippingRing
Function - ComprehensiveFitnessExercise
Applicablepeople - adult
prevention - Mousehand
type3 - Siliconepullring
Advantage - HighlyflexibleDifficulttodisconnect
Injuredhand - Rehabilitationtraining
type4 - Fingerrehabilitationtraining