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 is compatible with electric treadmills that use round magnetic switches. Feature 3: Easy to Use – Compact, simple to operate, and easy to install. Place the safety key into the designated slot on the control panel and clip the other end to your clothing for convenient use. Feature 4: Durable Materials – Safety keys are essential for maintaining the efficient operation of any treadmill. This round safety key is made of high-quality ABS plastic and strong magnets, enhancing durability and safety. Feature 5: Lightweight and Portable – This treadmill emergency stop device is lightweight and portable, making it easy to carry when traveling or exercising away from home. 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 0-1cm error, which does not affect usage.) Package List: 2 x Emergency Safety Switches Note: 1. Due to manual measurement, please allow 0-1cm size error. Confirm you are comfortable with this before purchasing. 2. Due to differences in monitor displays, the image may not reflect the actual color of the item. Thank you.