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 accidents during exercise. 2. Applications: This magnetic suction safety switch is designed for electric treadmills that use round magnetic switches. 3. Easy to Use: Compact and simple to install. During use, place the safety key into the panel groove and clip the other end onto clothing for convenient operation. 4. Durable Materials: Safety keys are essential for maintaining treadmill performance. This round safety key is made from high-quality ABS and magnets, enhancing durability and safety. 5. Lightweight and Portable: This emergency stop device is lightweight and easy to carry, ideal for use during travel or outdoor workouts.