Adjustable Resistance: The tension can be adjusted from \(5\text{\ kg}\) to \(60\text{\ kg}\) using a turning knob. Design: Features a stainless steel spring and ergonomic, non-slip rubber handles for a secure hold. Targeted Muscle Groups: Designed to strengthen fingers, hands, wrists, and forearms. Portability: Compact and lightweight, suitable for use at home, in the office, or while traveling.