GRM hand exerciser grip strengthener is safe, non-toxic, and durable. It can be used in home, office, gymnasium, or classroom to help you exercise from amateur to master step by step. Stress relief grip ball to release bad mood, daily stress. Finger grip stretcher to strengthen muscle groups. Stress reliever to reduce joint pains, stiffness, release stress, and increase blood circulation for people who have longtime typing, mouse working jobs. Great stress relief toys will help relieve stress, anxiety and build motor skills wherever you are. Counting Forearm Grip Strengthener offers occupational therapy for carpal tunnel, rheumatoid arthritis, joint pain, and stiffness, or tendonitis. They also offer a range of therapy ranging from 0-99 00-99 to 11-132 lbs.