Improve The Strength Of Your Hands, Fingers, Wrist And Forearms, Perfect For Those Who Have Arthritis, Tendonitis, Carpal Tunnel And Also Great For Musicians And Athletes, Golfers, Rock Climbers And Tennis Players., GRIP: Ideal For Improving Hand And Finger Grip Strength, Endurance, Dexterity, Muscle Tone, And Fine And Gross Motor Skills., ADJUSTABLE. Very Easy To Adjust With A Screw Cap From 10-40 KG, EXERCISE: This Hand Strengthener Is Ideal For Exercise, Gym, Home, Workplace Or Even On A Plane Without Disturbing Those Around You., PORTABLE: Our Compact Design Allows You To Fit It In Your Pocket, Tote Bag, Or Gym Bag So You Can Take Your Hand Grip With You Anywhere., Suitable For The Elderly, The Office Crowd And Sports Enthusiasts.