Automatic Protection: The safety lock is an automatic protection device for the treadmill. When the switch is removed from the treadmill's sensing area, the treadmill immediately stops and emits a beep to help prevent accidents during exercise.Applications: Magnetic suction safety switch designed for electric treadmills. Compatible with electric treadmills that use round magnetic switches.Easy to Use: Compact design for easy installation and operation. The safety key inserts into the designated slot on the treadmill panel, while the other end clips securely onto clothing for convenience.Durable Materials: Treadmill safety keys are essential for safe operation. This round safety key is made of high-quality ABS plastic and integrated magnets, providing durability and reliable performance.Lightweight and Portable: This emergency stop device is lightweight and easy to carry, making it convenient for travel or outdoor use.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 single column: 2mm / 0.1in, Distance between two columns: 20mm / 0.8in (Note: Rope has slight elasticity. Manual measurement may result in a 01cm variation, which does not affect functionality.)Package List 2 x Emergency Stop SwitchNote 1. Due to manual measurement, please allow 01cm size error. Confirm you accept this before purchasing. 2. Due to differences in monitor displays, the actual color of the item may vary slightly from images shown.