Handmaster Plus Hand Exerciser *You can purchase these Hand Exercisers as a set of three. Click here!* The HandMaster Plus Hand Exerciser helps strengthen hand muscles. The HandMaster Plus can be used to treat carpal tunnel syndrome, tennis elbow, golfer's elbow, RSI's (repetitive stress injuries), tendonitis, DeQuervains' syndrome, Dupuytren's contracture, osteoarthritis, osteoporosis, stroke, neuropathy, post-surgical rehabilitation, sprain/dislocation/fracture rehabilitation, subluxation and adhesion, circulatory concerns, and more! Levels of Firmness Purple, Early Rehabilitation, Soft Ideal for: Beginners, individuals with weak hands, or those recovering from injuries. Benefits: Gentle resistance for building strength gradually. Red, Late Rehabilitation, Medium Ideal for: Most users looking for a balanced workout or maintaining hand strength. Benefits: Provides a good challenge while remaining comfortable. Orange, Strength Training, Firm Ideal for: Athletes, musicians, or individuals with strong hands seeking increased resistance. Benefits: Offers maximum resistance for building strength and endurance. Dimensions: 3.5" x 3.5" x 3.5"Weight: 0.5 lbsUPC: 714905025999