Automatic Protection: The safety lock is 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 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. Place the safety key into the designated slot on the control panel and clip the other end onto your clothing for convenient use. Durable Materials: Treadmill safety keys are essential for safe operation. This round safety key is made of high-quality ABS plastic and strong magnets, enhancing durability and safety. Lightweight and Portable: This treadmill 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 allow for small variations, which do not affect functionality.) Package List: 2 x Emergency Safety Switches Note: 1. Due to manual measurement, please allow 0–1cm size error. Confirm you are comfortable with this before purchasing. 2. Due to differences in monitor displays, the image may not reflect the actual color of the product.