Feature: 1. Automatic Protection: The safety lock serves as an automatic protection device for the treadmill. When the switch moves out of the treadmill's sensing area, the treadmill immediately stops and emits a beep to help prevent accidents during exercise. 2. Applications: Magnetic suction safety switch designed for electric treadmills, compatible with electric treadmills that use round magnetic switches. 3. Easy to Use: Compact design for simple operation and installation. To use, place the safety key into the panel groove and clip the other end onto clothing for convenient and secure attachment. 4. Durable Materials: Treadmill safety keys are essential for maintaining proper treadmill function. This round safety key is made from high-quality ABS plastic and integrated magnets, enhancing durability and safety performance. 5. Lightweight and Portable: This emergency stop device is lightweight and easy to carry, making it convenient for travel or outdoor use. Item Type: Treadmill Safety Switch Material: ABS, Magnet Gross Weight: 31g / 1.1oz Product Size: Rope length: 92cm / 36.2in, Magnet shell diameter: 32mm / 1.3in, Height: 28mm / 1.1in, Magnet diameter: 9mm / 0.4in Diameter of a single column: 2mm / 0.1in, Distance between two columns: 20mm / 0.8in (Note: The rope has slight elasticity. Manual measurement may result in a 0–1cm variation, which does not affect functionality.) Package List: 2 x Emergency Safety Switches Note: 1. Due to manual measurement, please allow 0–1cm size error. Ensure you are comfortable with this before purchasing. 2. Due to differences in monitor displays, the actual color of the item may vary slightly from the images shown.