Strauss Wrist Exerciser, Black and Adjustable Finger Hand Grip, Black Durable wrist strengthener and comfort: This wrist strengthener is made of heavy duty carbon steel spring, which is stainless and durable soft and thicken foam minimize hand grip No assembly required adjustable stabilizer pad for regular or reverse wrist curls, the adjustable anti-resistance nylon ribbon for both small and large hands, men and women Forearm and wrist support for maximum safety and comfort lightweight for easy transport, quick and comfortable to use anytime, anywhere All-in-one hand exerciser specifically design for many musical instrument. Also can be used for finger strength exercise in daily life. Safely and conveniently build strength, endurance, and flexibility and coordination, provides a complete strength training solution for fingers, hands, wrists, and forearms