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

【A GREAT SPORTS TRAINING AND FITNESS TOOL】 This hand grip strength trainer is a great sports training and fitness tool for use at home and in the gym. If you like golf, basketball, volleyball, baseball, tennis or more, this is wrist machine is must-have equipment for strengthening your wrist muscle.
【MADE OF PREMIUM ABS, EVA, PU MATERIAL】 This hand grip exerciser strengthener is made of premium ABS, EVA, PU material, strong, and has good durability, long service life, you can use it for a long time.
【PROFESSIONAL TECHNOLOGY,ADJUSTABLE】 Adjustable Wrist Machine is designed with newest professional technology; this wrist machine could not only adjust the handle size, but also could adjust the strength scope, and it let you feel more safe and comfortable.

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