Features: Applications: Magnetic suction safety switch for electric treadmills is suitable for electric treadmills with rounded magnetic switches. Defend: The safety lock is an automatic protection device for the treadmill. When the switch is out of the treadmill sensing area, the running opportunity immediately stops working and emits a beep to prevent from falling during the exercise. Easy to Use: It is compact, easy to use, and easy to install. When used, the safety lock is placed in the grooved place of panel and the other end is clipped on the clothes, which is convenient to operate. Materials: The round treadmill safety key is made of premium ABS and magnets, which enhances their strength and safety. Portable: This treadmill emergency stop device is lightweight and portable. You can take it with you when you need to go out for exercise. Spec: 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 error, does not affect the use) packing list: 2 xEmergency Stop Switch Notice: 1. Due to manual measurement, please allow 0‑1cm error. Make sure you don't mind before bidding. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the item. Thanks!