Appearance and Material: The handles are made of high-strength, non-slip material, providing a comfortable grip and preventing slippage, ensuring fatigue-free training even during extended periods. The core spring is made of 4mm carbon steel, which is durable and highly resistant to pressure, resisting deformation or breakage over time. The sturdy overall structure ensures safety and stability during training.

Adjustable Resistance: Resistance can be adjusted by rotating the handle: counterclockwise (-) decreases resistance, clockwise (+) increases resistance. The adjustable range ranges from 10 kg to 100 kg, meeting the needs of trainers of all levels. The thickened spring design ensures safety and reliability even during high-resistance training.

Function and Training Effect: It primarily targets the finger, palm, wrist, and forearm muscles, improving grip strength, endurance, and explosive power. The adjustable resistance allows for flexible training, allowing for progressive strength training, making it ideal for hand strengthening and rehabilitation.

Portable and Durable: The compact design makes it easy to carry, making it suitable for training at home, in the office, or outdoors. The carbon steel spring is wear-resistant and rust-resistant, and the handle is non-slip and durable, ensuring long-term stability.

Electronic Features: Equipped with an electronic counter to record training sessions for easy progress tracking. A one-touch reset function quickly resets to zero, making daily training statistics convenient.

Suitable for: Suitable for training in sports such as rock climbing, weightlifting, tennis, and golf, as well as hand rehabilitation. Flexible resistance adjustment accommodates a wide range of grip strength requirements, from beginners to advanced trainers.