CuraBall Hand Trainer Reviews and Complaints The heart of the CuraBall Hand Trainer is its internal gyroscope, which features a solid rotor constructed from either high-grade steel or zinc, providing the necessary density to generate substantial resistance as it spins. This rotor is housed within a high-impact polycarbonate or aluminum shell, ensuring that the CuraBall Hand Trainer can withstand the rigors of daily use without sustaining damage.
CuraBall Hand Trainer Reviews and Complaints The heart of the CuraBall Hand Trainer is its internal gyroscope, which features a solid rotor constructed from either high-grade steel or zinc, providing the necessary density to generate substantial resistance as it spins. This screen is powered entirely by the kinetic energy generated by the spinning rotor, meaning the CuraBall Hand Trainer requires no batteries and never needs to be charged, making it an eco-friendly and hassle-free choice for consumers. At high speeds, the CuraBall Hand Trainer can generate resistance equivalent to up to 35 pounds of force, which is quite impressive for a device that weighs only about 0.66 pounds. Order Now CuraBall Hand Trainer Pros & Cons