Product Name: Adjustable Hand Grip Strengthener Resistance 10kgs-40kgs Esg12841 Model NO.: ESG12841 Certification: CE Customized: Non-Customized Material: Stainless Steel and Rubber Trademark: no trademark Transport Package: Carton Specification: size: 7x4x1 inches; 4.8 ounces Origin: China HS Code: 9506919000 Product Description HAND & FINGER trainer - Improve strength of your hands, fingers, wrist and forearms, perfect for those people who have Arthritis, Tendonitis, Carpal Tunnel. And also great for musicians, athletes, golfers, rock climbers and tennis players.Great for enhancing hand and finger grip strength, endurance, dexterity, muscular tone and fine and gross motor skills.Resistance Adjustable - Very easy to adjust by a screw cap from 22lbs/10kgs - 88lbs/40kgs.Hand strength is suitable to do your excise at anywhere, at home, workplace, or even on an airplane without bothering those around you.Model No: ESG12841