1、Reliable Material: This treadmill key is made of ABS and plastic, which is sturdy and not easily damaged, and is suitable for long term use by runners. 2、Strong Clip: This product can be easily and firmly clamped to any part of the clothing; It can be easily clipped onto almost all types of clothing, making it simple and convenient to use. 3、Convenient to Carry: The security key is small in size, light in weightl; It is convenient for users to carry to any place where they need it, providing convenience for life. 4、Auto Protection Device: This product is an automatic protection device for treadmills. When it exceeds the sensing area of the treadmill, the running machine immediately stops working and emits a warning tone to prevent the user from falling and being injured during exercise. 5、Applicable to: This treadmill magnet security clip is easy to use and easy to install for maintaining the efficient operation of any treadmill exercise and sports equipment. Item Type: Running machine security clip Weight: 58.00g/2.05oz Material: ABS, magnetic 2 x Running Machine Security Locks