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 treadmill’s sensing area, the treadmill immediately stops and emits a beep to help prevent injury during exercise. Applications: Magnetic suction safety switch designed for electric treadmills with round magnetic switch systems. Easy to Use: Compact and simple to install. Place the safety key into the panel groove and clip the other end onto clothing for convenient operation. Durable Materials: Safety keys are essential for proper treadmill function. This round treadmill safety key is made of high-quality ABS plastic and magnets, providing enhanced durability and safety. Lightweight and Portable: This emergency stop device is lightweight and easy to carry, ideal for use at home or while traveling.