Bruryan Hand Gripper Exerciser-Wrist Strength Training Exercise Machine Forearm Grip Hand Gripper Exerciser

FLEXIBLE AND ADJUSTABLE: The strength of the forearm exerciser can be adjusted according to your arm length and strength level, perfectly adapting to your needs, helping to enhance the wrist and arm strength and grip, and improve the exercise effect.
SEALED ABS MATERIAL: The wrist strength exerciser is made of high-quality ABS material, which is well sealed, more pressure-resistant, and safe to use. It can help you complete an excellent arm strength exercise no matter what your strength level is.
SUPER FLEXIBILITY: The forearm exerciser’s super-flexible, highly elastic springs allow this forearm strength trainer to have massive flex and never break or deform.

THE #1 BRAND WORLDWIDE – Powerball features a military-grade plastic shell with a hardened, drop-resistant, stainless-steel rotor axle for 100% vibration-free spinning up to 16,000rpm
CORD ACTIVATION – 250Hz Powerball comes with two starting cords for quick and easy activation every time. Take this pocket-sized fitness gadget with you on the go and always have a fully comprehensive workout at your fingertips
SPEED IS POWER – Generate up to 15kg of gyroscopic resistance and build muscle along the entire arm, from shoulder to fingertip. The faster you spin, the stronger the resistance. 250Hz Powerball Classic will strengthen and train your grip, wrist and forearm muscles when used for as little as 3-5 minutes each day at moderate to fast spin speeds