Automatic Protection: The safety lock is an automatic protection device for the treadmill. When the switch is removed from the treadmill sensing area, the treadmill immediately stops and emits a beep to help prevent falls during exercise. Applications: Magnetic suction safety switch for electric treadmills, compatible with electric treadmills that use round magnetic switches. Easy to Use: Compact design, simple to install and operate. The safety key attaches to the treadmill console and clips onto clothing for secure use. Durable Materials: Treadmill safety keys are essential for proper operation. This round safety key is made of high-quality ABS plastic and strong magnets, designed for durability and safety. Lightweight and Portable: This emergency stop device is lightweight and easy to carry, ideal for home and travel use. Specifications: Item Type: Treadmill Safety Switch Material: ABS, Magnet Gross Weight: 31g Product Size: Rope length: 92cm, Magnet shell diameter: 32mm, Height: 28mm, Magnet diameter: 9mm, Diameter of single column: 2mm, Distance between two columns: 20mm Note: Rope has slight elasticity. Manual measurement may allow small variations, which do not affect functionality. Package List: 2 x Emergency Stop Switch Notes: 1. Due to manual measurement, please allow 0–1cm size error. 2. Due to differences in monitor displays, the actual color may vary slightly from the image.