Feature 1: Automatic Protection The safety lock is 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 falls during exercise.Feature 2: Applications This magnetic suction safety switch is designed for electric treadmills and compatible with models that use round magnetic switches.Feature 3: Easy to Use Compact, simple to install, and user-friendly. Place the safety key into the designated slot on the control panel and clip the other end onto your clothing for convenient operation.Feature 4: Durable Materials Treadmill safety keys are essential for safe operation. This round safety key is made from high-quality ABS plastic and strong magnets, enhancing durability and safety.Feature 5: Lightweight and Portable This emergency stop device is lightweight and easy to carry, making it ideal for travel or outdoor workouts.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: The rope has slight elasticity. Manual measurement may cause small errors, but this does not affect functionality.)Package List: 2 x Emergency Safety SwitchesNote: 1. Due to manual measurement, please allow 01cm size error. Confirm you are comfortable with this before purchasing. 2. Due to differences in monitor displays, the actual product color may vary slightly from images. Thank you for understanding.