Description:Heavy Grippers Hand Gripper Strength Tool Device.Designed to strengthen Wrists, Fingers & Forearms.Make your hand more powerful.Chrome ally steel spring with great tensile force provides you a best Strength Device.Safe grip sponge handle fits your hand and give you a best comfort feeling.Great training aids for all martial people and who need to practice his or her hand.Strength Tool Device can be used anytime anywhere and very convenient to take.Material: Steel & Sponge.Dimensions: 13 x 9 x 2.5 cmNotes:1.Due to manual measurements, please allow an error of 1-3 cm.2.Due to problems between different monitors, the image may not reflect the actual color, please refer to the actual product.3.If there is a problem with the product, please contact us.4.Thank you for understanding.hope you can enjoy your shopping!FEEDBACK:1.If you are satisfied with our products and services,please leave your postive feedback and 5 stars.2.If you don't satisfied our products,pls contact JUMIA CUSTOMER SERVICE before you leave negative feedback.they guarantee will 100% slove any problem for you and make you satisfied.SERVICE:1.We care about our valued customers,and will always try to help you,hope to establish long business with you.2.Please contact us by Jumia Customer service before leaving any negative feedback or opening and dispute on the site. Please give us the opportunity to resolve any problem.Thank you!