High quality aluminum handles and a coated steel spring provide a durable exercise tool.Ergonomically designed for comfortable use as a hand strength trainer to develop muscles in forearm, wrist and hands.Grip development is a great method for improved function in weight lifting, sports, and daily tasks.Ergonomic & ambidextrous design makes it suitable for men women, seniors, teens and pre-teens, and children, depending on age.Works great for increasing speed, strength and power in the wrist, hands, fingers and forearms.
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