Feature 1Automatic Protection: The safety lock is an automatic protection device for the treadmill. When the switch is out of the treadmill sensing area, the running opportunity immediately stops working and emits a beep to prevent from falling during the exercise. 2Applications: Magnetic suction safety switch for electric treadmills is suitable for electric treadmills with rounded magnetic switches. 3Easy to Use: It is compact, easy to use, and easy to install. When used, the safety lock is placed in the grooved place of panel and the other end is clipped on the clothes, which is convenient to operate. 4Durable Materials: Safety keys are extremely important to maintain the efficient operation of any treadmill. The round treadmill safety key is made of premium ABS and magnets, which enhances their strength and safety. 5Lightweigt and Portable: This treadmill emergency stop device is lightweight and portable. You can take it with you when you need to go out for exercise.Item Type: Treadmill Safety SwitchMaterial: ABS, magnetGross Weight: 31g or 1.1ozProduct Size: Rope length: 92cm or 36.2in, magnet shell diameter: 32mm or 1.3in, height: 28mm or 1.1in, magnet diameter 9mm or 0.4inDiameter of a single column: 2mm or 0.1in, distance between two columns: 20mm or 0.8in(The rope is slightly elastic, manual measurement allows error, does not affect the use) .wang-edit-text{ font-family:'Arial' !important } .wang-edit-text table { border-top: 1px solid 000 border-left: 1px solid 000 } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000 border-right: 1px solid 000 padding: 3px 5px } .wang-edit-text table th { text-align: center }Package List2 x Emergency Stop SwitchNote1. Due to manual measurement, please allow 0and 8209 1cm error. Make sure you don't mind before bidding.2. Due to the difference of different monitors, the picture may not reflect the actual color of the item. Thanks! Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.