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 (The rope is slightly elastic. Manual measurement allows for slight error, which does not affect use.) 1. Automatic Protection: The safety lock is an automatic protection device for treadmills. When the switch moves out of the treadmill's sensing area, the treadmill immediately stops and emits a beep, helping prevent injury during exercise. 2. Applications: Magnetic suction safety switch designed for electric treadmills with round magnetic switches. 3. Easy to Use: Compact and simple to install. Place the safety key into the designated slot on the control panel and clip the other end to clothing for convenient operation. 4. Durable Materials: Safety keys are essential for maintaining proper treadmill function. This round safety key is made of high-quality ABS plastic and magnets, enhancing durability and safety. 5. Lightweight and Portable: This emergency stop device is lightweight and easy to carry, ideal for use at home or while traveling.