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. Applications: This magnetic safety switch is designed for electric treadmills and compatible with models that use round magnetic switches. Easy to Use: Compact and simple to install, the safety lock is placed into the panel groove while the other end clips onto clothing for convenient operation. Durable Materials: The round treadmill safety key is constructed from high-quality ABS plastic and integrated magnets, providing enhanced durability and safety for reliable performance. Lightweight and Portable: This emergency stop device is lightweight and easy to carry, making it convenient for use outside the home. Specification 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 01cm variation, which does not affect functionality. Package List 2 x Emergency Stop Switch Note 1. Due to manual measurement, please allow for a 01cm 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.