Effortlessly tone & strengthen your upper extremities with the PowerTrainer Spin Ball!
Develop Upper Body Tone & Strength
An incredibly fun and addictive gadget! It is ideal for any sport that requires powerful arms and grip strength such as boxing, martial arts, climbing, tennis, golf and more
This not only train the wrist but also the forearm and upper arm, fingers and shoulders! Use it to exercise the muscles beforehand, and as rehab training afterward!
How & When To Use
After getting the inner section moving with the starting cord, hold the ball in your hand and make circular movements with your wrist. Keep moving like this and increase the rotation. Centrifugal force means it gets harder and harder to keep up the speed the faster it rotates.
It can reach speeds of around 15,000 rpm, and you'll have to handle some real forces when you start to get near those levels!
It can generate up to 15kg of inertial resistance for powerful upper arm muscles and a strong, solid grip!
Use this at high speeds for just 3-5 minutes each day for an intense upper body workout and dramatically improved strength in your fingers, hands, wrists, arms and shoulders!
Fun & Functional Design
It's baseball-sized, handheld & compact. Its inner rotating gyroscope & outer shell are made of premium-grade ABS PLUS an aluminum rotor axle ensuring an ultra-smooth & whisper-quiet spin performance with absolutely zero vibration! It also features self-powered LED lights for that extra pizzaz!
This is the perfect desk exerciser for regular strengthening workouts & for boosting blood flow during periods of inactivity!
Get one of the most powerful forearms, grip & wrist strengthening devices ever built NOW!
Material: Premium-grade ABS + Aluminum rotor axle
Available Colors: Orange, Blue, Purple, Green
Package Inclusion/s: Get 1 PC PowerTrainer Spin Ball
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