DescriptionMade of Steel Spring, unique round design and well designed spring sesistance for optimal strength training, your fingers become more flexible and full of power, relieve fatigue and work, life stress and adjust the good mood.Features- Color: Silver. - Material: Stainless Steel. - Size: 9x5x5cm. - Made of Steel Spring, unique round design and well designed spring sesistance for optimal strength training, your fingers become more flexible and full of power, relieve fatigue and work, life stress and adjust the good mood. - Portable and Lightweight: The hand grip strengthener is light-weight, could be pocket, easy to carry indoor and outdoor, such as Playground, camping, climbing, hiking and more. - Built with the best quality materials and enhanced spring to endure long-term and frequent use. Full palm design is an elegant, one-of-a-kind fitness tool. - Perfect for men, women, seniors and teens.