Strong and durable: This fitness magnet key is made of high-quality ABS and magnetic material, providing sturdy construction that is resistant to damage, ideal for long-term use by runners. Strong clip: This treadmill magnetic lock features a secure clip that easily attaches to any part of your clothing, offering convenient and reliable use. Easy to install: Designed with a compact size and lightweight build, this treadmill magnet security lock is simple to install and replace. Easy to use: This treadmill safety key functions effectively by immediately stopping the treadmill and triggering an ble beep when it moves out of the sensor's range, helping prevent accidents during exercise. Wide application: This universal ABS treadmill magnetic lock is suitable for use in various settings such as homes and gyms, making it a practical fitness accessory.