Wrist Trainer Power Gyro Ball

Forge iron wrists and a crushing grip anywhere you go with this heavy-duty, string-free zinc alloy ball.

It uses gyroscopic resistance to fight back the faster you spin it, hitting up to 10,000 RPM. There are no static weights—just pure momentum that tortures the deep, stubborn forearm muscles traditional lifting ignores, making it the ultimate tool to rehab weak joints or build massive, undeniable raw power.