【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. 【Solve Common Problems】:If your treadmill will not power up or has inconsistent power supply to the system, it is often due to a faulty safety key. Our replacement safety keys will solve these common problems with treadmills at a fraction of the cost. 【Wide Compatible】:This universal treadmill safety key is suitable for almost 99% of treadmills, compatible with most top brands, including Alliance, Pacemaster, Fitness Gear, Horizon, Bowflex, Landice, Lifespan, Livestrong, Merit, Pathfinder, Smooth, Sole, Sunny, Tempo, Triumph and Xterra. For size reasons, we can't guarantee that it is suitable for all treadmills. If there is any incompatibility, please contact us by Amazon message or consult us before purchasing. 【Quality Assurance】: Customer satisfaction is our top priority, Wellinterest provides customer service at any time. if there is any product issues, we offer free replacement. This is a round treadmill magnet replacement safety key.Used on these following Treadmills including NordicTrack, Proform, Image, Weslo Cadence, Reebok,Epic, Golds Gym, Lifestyler, Icon,Reebok, Freemotion, and Healthrider. Fits most models from mostiance, Pacemaster, Fitness Gear, Horizon,Vision,True,Sportcraft, Bowflex, Landice, Lifespan, Livestrong, Merit, Pathfinder, Smooth, Sole, Sunny, Tempo, Triumph and Xterra. Specification: Product Name: Treadmill Safety Key Material: ABS Black Weight: 0.8 oz Clip Size: 1.6in * 1.1 in/4cm * 2.8cm Shell Diameter of magnet: 1.2 in/3cm Diameter of magnet: 0.35in/0.9cm Nylon RopeLength: 3 Feet/1M Red Weight:0.6 oz Clip Size: 2.2in * 1.1 in/5.8cm * 2.8cm Nylon RopeLength: 3 Feet/1M Package Includes: 1 x Treadmill Magnet Safety Key Note： 1.This treadmill safety key is suitable for almost 99% of treadmills. For size reasons, we can't guarantee that it is suitable for most treadmills. If there is any incompatibility, please contact us and we will give you timely service. Or please consult us before purchasing. 2.The magnet ends are mounted on the magnets of the treadmill. Different treadmills may have different safety key installation positions.