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) Automatic Protection: The safety lock is an automatic protection device for treadmills. When the switch moves out of the treadmills sensing area, the treadmill immediately stops and emits an alert sound to help prevent accidents during exercise. Applications: Magnetic suction safety switch designed for electric treadmills with round magnetic switch compatibility. Easy to Use: Compact design for simple installation and operation. Place the safety key into the designated slot on the treadmill console and clip the other end onto your clothing for secure use. Durable Materials: Safety keys are essential for proper treadmill function. This round safety key is made from high-quality ABS plastic and magnets, offering enhanced durability and reliability. Lightweight and Portable: This emergency stop device is lightweight and easy to carry, making it convenient for use at home or while traveling.