PLEASE SEND US A MESSAGE IF YOU HAVE ANY COMPATIBILITY QUESTIONS BEFORE PURCHASING THE KEY. DO NOT PURCHASE IF YOU NEED A ROUND OR MAGNETIC KEY - THIS IS NOT MAGNETIC. Don't let a lost key stop you from using your treadmill - our standard-sized treadmill key is an ideal fit for over 2,000 treadmill models utilizing SQUARE, NON-MAGNETIC TREADMILL KEYS. Comparable to OEM part numbers 119038 and 119039. Compatible with many specific models from a variety of manufacturers, including Weslo Cadence, Proform / Pro-Form, Nordictrack, Lifestyler, Horizon, Healthrider, Reebok, Softstrider, Sportcraft and many more. Made from rigid ABS plastic with a high-quality braided cord, our replacement treadmill safety key is made to stand up to the constant use of even the most frequent runners / walkers. Easily clips to virtually all types of clothing so you can forget about the key while you walk or run. DOES NOT FIT most models from Alliance, Crosswalk, Epic, Fitness Gear, Landice, Lifespan, Livestrong, Merit, Pathfinder, Smooth, Sole, Sunny, Tempo, Triumph and Xterra. If you have one of these models, please check or ask a question before ordering. This product is manufactured and distributed by Impresa Products (TM). This is not a Weslo Cadence, Proform / Pro-Form, Nordictrack, Lifestyler, Horizon, Healthrider, Reebok, Softstrider, Sportcraft, Alliance, Crosswalk, Epic, Fitness Gear, Landice, Lifespan, Livestrong, Merit, Pathfinder, Smooth, Sole, Sunny, Tempo, Triumph or Xterra product and Impresa Products has no affiliation with or endorsement from these brands. Our product is not covered under any other manufacturer's warranty (except for Impresa Products). The afforementioned brand names and logos are the registered trademarks of their owners. Any use of the afforementioned brand names, models or any other related designations are made solely for purposes of describing and illustrating compatibility.