This is a <b>round treadmill universal magnet replacement safety key</b>.Used on the following Treadmills including NordicTrack, Proform, Image, Weslo, Reebok,Epic, Golds Gym, Freemotion, and Healthrider. Fits most models from Alliance, Pacemaster, Fitness Gear, Horizon, Bowflex, Landice, Lifespan, Livestrong, Merit, Pathfinder, Smooth, Sole, Sunny, Tempo, Triumph and Xterra.<br><br><b>Specification:</b><br>Product Name: Treadmill Safety Key<br>Weight: 3.2 oz<br>Material: ABS<br> Clip Size: 1.6in * 1.1 in/4cm * 2.8cm<br>Shell Diameter of magnet: 1.2 in/3cm<br>Diameter of magnet: 0.35in/0.9cm<br>Nylon Rope Length: 3 Feet/1M<br><br><b>Package Includes:</b><br>1 x Treadmill Universal Magnet Safety Key<br><br><b>Note</b><br><b>1.This universal treadmill safety key is suitable for almost 99% of treadmills. For size reasons, we can't guarantee that it is suitable for all treadmills. If there is any incompatibility, please contact us and we will give you timely service. Or please consult us before purchasing.</b><br><br>2.The magnet ends are mounted on the magnets of the treadmill. Different treadmills may have different safety key installation positions.