Material: This treadmill speed sensor line is made of plastic, ensuring durability and long-term use. Compatibility: The product includes a 3-pin light speed sensor or a 2-pin magnetic speed sensor (OPTIONAL), making it suitable for various treadmill models. Functionality: It serves as an essential part of the treadmill that helps in accurately measuring the speed while running or walking on the machine. Easy Installation: The treadmill accessory is easy to install, making it convenient for users to replace their old or damaged parts without professional help. Reliable Performance: With its sensitivity and precision, this treadmill speed sensor line ensures reliable performance for your workout sessions. Size Chart: 3-pin light speed sensor: 31 cm / 12.20 inches Package Includes: 1 x 3-pin treadmill light speed sensor Note: Please allow slight errors due to manual measurement and different monitor settings. Note: Due to lighting and screen setting differences, the item's color may be slightly different from the pictures. Please allow slight dimensional differences due to manual measurement.