1ABS Magnet Materials: This treadmill safety key is made of premium ABS and magnet materials, ensuring strong magnetic force, durability, and suitability for long term use by runners. 2Secure Clip: The safety switch can easily be clipped onto any part of clothing with a strong grip. It can be securely attached to almost all types of garments, providing easy and convenient use. 3User Friendly Function: Serving as the safety device for treadmills, this key triggers an emergency stop and audible alert if it moves out of the treadmill's sensing area, ensuring user safety and preventing potential accidents during workouts. 4Essential Accessory: Compact and lightweight, this magnetic safety key is easy to install and crucial for maintaining the efficient use of your treadmill during exercise. 5Perfect Replacement: This universal treadmill magnetic lock is compatible with most treadmills, serving as the perfect replacement for lost or damaged keys, allowing you to fully enjoy your workout. Item Type: Treadmill Safety Key Material: ABS, Magnet Size: Approx. 20x48mm/0.79x1.89in 2 x Treadmill Safety Key