Feature:1. Firm Clip: This stop switch clip features a secure design that can easily attach to any part of your clothing, versatile and works well with all types of clothes for added convenience.2. Safety Ensured: Serves as an automatic safety device, ensures that the treadmill instantly stops and triggers an alarm sound when beyond the range, preventing from injury.3. Durable Material: These treadmill keys are made of sturdy ABS plastic, ensuring long term use and durability for all runners.4. Universal Fit: This safety key operates perfectly on most treadmills requiring a round treadmill key, making it a compact, lightweight, and easy to install solution.5. Treadmill Key Replacement: This magnet key can effectively ensure the safety of treadmill users, prompting people whether the treadmill is turned on.Specification:Item Type: Treadmill Magnetic LockMaterial: ABS, magnet.Package List:2 xTreadmill Magnetic Lock