Description: High-quality material: The handle is made of PP engineering material, which has good toughness and durability, and is not easy to break. The spring is made of high-quality spring steel, which is durable and will not break ADJUSTABLE RESISTANCE: The adjustable hand grips are designed with resistance ranging from 22 lbs to 132 lbs. Hand strengtheners improve finger, hand, wrist and forearm flexibility by increasing or decreasing tension on the hand exerciser .
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