Product Features Treadmill safety key: Magnetic work, can work easy and quick on most treadmills requiring a round treadmill safety key. It can easily clamp to any part of your clothing and it's strong to hold.Easily clips to virtually all types of clothing so you can forget about the key while you walk or run. Premium Material: Safety keys are extremely important to maintain the efficient operation of any treadmill. The round treadmill safety key are made of high quality ABS plastic, braided rope, Powerful magnets and springs, This enhances their strength and safety. Wide Compatible: This universal treadmill safety key is suitable for almost 99% of treadmills, compatible with most top brands,Product SpecificationType Treadmill Safety KeyMaterial ABSPlastic Clip Size 2.8 *5.8cmNylon Rope Length 1MFeatures Treadmill safety lock safety switchWeight 13gPackage Included1 x Treadmill Safety Key