Automatic Protection: The safety lock serves as 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 accidents during exercise.Applications: This magnetic suction safety switch is designed for electric treadmills and compatible with models that use round magnetic switches.Easy to Use: Compact and user-friendly, this safety lock is simple to install and operate. Place the safety key into the designated slot on the treadmill panel and clip the other end onto your clothing for convenient use.Durable Materials: Safety keys are essential for maintaining the proper function of your treadmill. This round safety key is constructed from high-quality ABS plastic and magnets, offering enhanced durability and safety.Lightweight and Portable: This emergency stop device is lightweight and easy to carry, making it convenient for use at home or while traveling.Specification 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 result in a small error, which does not affect functionality.)Package List 2 x Emergency Stop SwitchNote 1. Due to manual measurement, please allow 01cm size deviation. Confirm you are comfortable with this before purchasing. 2. Due to differences in monitor displays, the actual color of the item may vary slightly from the images shown.