Features PERFECT REPLACEMENT: Did your treadmill key lost, missed or broken? This is a perfect treadmill key replacement for you that you can enjoy your exercise. STRONG CLIP: It can easily clamp to any part of your clothing and it's strong to hold. Easily clips to virtually all types of clothing. Keep you safe during sports. FITS MOST MODELS: Compatible with a wide variety of motorized treadmills Lightweight and portable, which is more convenient to store and use, and you can take it when you go to the gym Present: A good present for yourself, family, friends, co-workers, treadmill users, and people in need Notice: Actual color may be slightly different from the image due to different light effect Please allow 1-3cm deviation due to manual measurement Description: Materials: Magnets; Plastic; Nylon Color: Red Magnets Diameter: 18mm / 0.708'' Magnets Shell Diameter: 28mm / 1.102'' Magnets Thickness: 3mm / 0.118'' Clip Width: 18mm / 0.708'' Weight: 20g Package List: 1xUniversal Treadmill Magnets Safety Key