Features: Enhancing magnetic strength ensures stable attachments during cycling, boosting sensors accuracy for precise speeds/distance trackings on bike computers. Consist of durability plastic and high grade metal, this light weight (6g) valves stem magnets resists wear while maintaining reliable performances. Ideal for cyclists, electric bike cyclists, and motorcyclists puruses reliability data synchronization between wheel and cycling computers. Perfect for commutes, mountain trail, or crosses country tours where real time distance/speeds metric enhances cycling experiences. Universally compatibility with Schraders valves, seamlessly integrating with bicycles, tricycles, and electric motorcycle. Specifications: Dimension:41mm/1.61in 35mm/1.38in Component:Plastic + Magnets Note:Only suitable for Schraders valves. Package Includes: 1pc Bicycles meter valves magnets note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.