Product Name: Silicone Grip Ring Hand Strengthener Finger Exerciser Strengthen Palm Power Forearm Squeezer Gripper Finger Trainer Esg13059 Model NO.: ESG13059 Material: Slicone Appliance: Gymnasium, Home Gender: Unisex Exercise Part: Hand Certification: ISO9001 Age Group: Adult Power Source: Manual Folded: Unfolded Trademark: no trademark Transport Package: Carton Specification: Available: 30lbs, 40lbs and 50lbs Origin: China HS Code: 9506919000 Product Description Materials: Environmental silica gelabout 7cm in diameter and about 1.8cm in thicknessMade of top-quality Silicone, not easy to tear. It is WASHABLE and can be use frequently and comfortably.Strengthen your wrists, improve the dexterity of your fingers and increase the strength your hands can apply while reducing fatigue.Portable and easy to fit in bag or pocket. You can get repetitions, at the office or anywhereAvailable in 30lbs, 40lbs and 50lbs.Model No: ESG13059