1、Universal: The safety key works perfectly on most treadmills that require a round treadmill key, is small, lightweight and easy to install. 2、Function: Automatic protection device for the treadmill. When the safety switch exceeds the sensing area of the treadmill, the treadmill will immediately stop working and issue a prompt tone to protect the user from falling and injuring during exercise 3、Firm Clip: It can be easily clipped to any part of the clothing and is firm. Easily clipped onto almost all types of clothing, it is simple and convenient to use. 4、ABS Material: This treadmill safety key is made of ABS plastic, strong and easy to damage, suitable for long term use by runners. 5、Perfect Replacement: This treadmill safety key works on most treadmills and is the perfect replacement for a treadmill key that allows you to exercise safely and without worry Item Type: Treadmill Magnetic Safety Switch Material: ABS, magnet 2 x Treadmill Magnetic Safety Switch