Features: The safety lock is a automatic for protections device for the treadmill. When the switches is out of the treadmill sensings area, the running opportunity immediately stops working and emits a beep to protect the user from falling during the exercise. Magnetic suction safety switches for electric treadmills with round magnetic switches. It is portable, easy to use, and easy to install. When used, the safety lock is placed in the grooves of the panel and the other end is clipped on the clothes, which is convenient to operate. Specifications: Type: Switches Lock Material: ABS, Magnets Dimension: S: app.1.8cm/0.71in L: app.3cm/1.18in Color: Red+White, Red+Black (optional) Quantity: 1Pc Note: 1.Please allow 0-1cm error due to manual measurement. Please make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1Pc Switches Lock