• Wood, Metal
• Hand grip strengthener-- comfortable grip: with round shaped design and palm size, it is easy to grip design, it is portable and very practical,workout grip balls
• Pull-up grip trainer-- widely used: grip ball is not only suitable for general fitness, but also for rock climbing enthusiasts, wrestling, gymnastics, and other sports,fitness training balls
• Muscle training balls-- sturdy and : good material, , wear-resistant resistance, tear resistance, high load bearing, not easy to break, is a good thing for fitness exercise,grip exerciser
• Grip trainer balls-- small and lightweight: easy to carry, can be used and carried when traveling,fitness accessories
• Gym hand grips-- : give it for your friends, show them your love and concern, give them a little surprise,pull-up grip balls