Treadmill owners, listen up! If you've lost your safety key or it's stopped working, this 2-pack of universal magnetic safety keys is exactly what you need to get back to your workouts. These things work with pretty much every treadmill brand out there - we're talking NordicTrack, Proform, Image, Weslo, Epic, Gold's Gym, Freemotion, Healthrider, and dozens more. The magnetic mechanism is super reliable and engages quickly and easily when you clip it in place. Each key comes with a 3-foot nylon rope that clips securely to your clothing, so if you happen to slip or fall, the key pulls out and stops the treadmill immediately for safety. The ABS construction is durable but lightweight at just 3.2 ounces, and the clip measures 1.6x1.1 inches with a 1.2-inch shell diameter. These aren't just for safety either - they can actually fix common issues where your treadmill won't start or has inconsistent power supply. Having two keys means you can keep one as a backup or share with family members. Seriously, for the price of what most manufacturers charge for one replacement key, you're getting two high-quality universal keys that solve multiple problems. Your treadmill workouts just got way safer and more reliable!