The auto-start design of our hand gyro requires no tools and can be activated with a simple wrist twist, making it convenient, easy, and practical to use. Quickly start your workout with our compact and portable wrist trainer ball, perfect for home or office use during free time. With a strong plastic housing and stainless steel shaft, our wrist strength ball is highly durable and resistant to breakage. By exercising with our gyroscopic hand trainer, you can improve strength in your wrists, fingers, shoulders, and arms, promoting overall physical fitness. This versatile hand exerciser is suitable for anyone looking to enhance their arm and finger strength, making it perfect for those who spend long hours working on computers, as it can help prevent work-related injuries.