This product is a treadmill magnet safety key, made of plastic, polyester and magnet material, . It can effectively ensure the safety of treadmill users. Convenient and easy to use and store. Suitable for home and gym use. Choose . Features -Color:Red -Material:Magnet, plastic, polyester -Size:13.00X3.00X3.00cm/5.11X1.18X1.18in - Manufactured with plastic, polyester and magnet material, sturdy and practical for a long use. - More convenient, It can easily clamp to any part of your clothing, and it's also firm to hold. - This treadmill safety key is an important device that protects owners and user from injury by not allowing the treadmill to run without the key attached. - This safety key is suitable for most kinds of running machine on the market, and you can use it with confidence. - The treadmill safety key is an important device that protects the owner and user from injury by not allowing the treadmill to operate without a connected key. Package list: 1 x Treadmill Safety Key