Body Art Length Power Fine control Wrist Exerciser KO-255 Foream Hand Grip Gym Fitness The Power Wrist can positively reinforce your wrist and arm strength with this power wrist and help improve firmness and power needed for golf, tennis , bowling, basketball and many other sports. Adopt high-quality 3mm spring steel, not easily deformed. It is possible to adjust the intensity. Compact and lightweight, strengthen your forearm and wrist force anytime, anywhere. The knob on the arm can be turned to adjust the resistance. / Materia l: Steel & ABC & EVA / Color : Black / Origin : Taiwan(OEM) You can adjust a power wrist to fit in your hand / Grips are made of sponge It is possible to adjust the intensity.