Strauss Adjustable Hand Grip Strengthener, (Black/Blue) and Wrist Exerciser, Black Durable construction & ergonomic design Adjustable resistance - hand grip strengthener can be adjustable from 22 to 88 lbs (10 to 40 kg), it can satisfy different power levels, from the beginners to the advanced 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