1、Improve Circulation: Hand grip strength trainer can activate the hand meridians, promote blood circulation, eliminate fatigue and promote sleep.2、Multifunction: Grip strength trainer can effectively improve your grip and hand strength, quickly build wrist endurance and forearm, biceps, triceps, ligaments, and shoulder strength.3、Promote Recovery: Wrist strength trainer with a health care effect, has a certain auxiliary effect on the upper limb rheumatoid arthritis and periarthritis of shoulder, helps sports injured.4、Office Worker Use: Wrist strengthener suitable for office people, improve abdominal compression, limb numbness, and less activity, prevents brain oxygen deficiency, dizziness, chest tightness and fatigue symptoms.5、Excellent ABS: Hand grip strengthener made of high quality ABS material, sturdy and firm, which can effectively exercise the arm while improving flexibility.