Bike Computer Magnet, Universal Speedometer Magnet Wireless Bicycle Computer Magnetic Sensor for Bike Odometer Speedometer PREMIUM MATERIAL: Our Bike Odometer Magnet is made from premium materials, thus is strong and durable. EASY TO INSTALL: Bike Computer Magnet is suitable for different specifications of the bicycle spoke, mini, easy to install, and not easy to drop. HELPFUL: Makes you riding more scientific and efficient, good assistant for bicycle training. GOOD CHOICE: Universal for all brands of bike computers, can be used as replacement for your broken or lost bike computer sensor, more practical. MULTI PUREPOSE: Not only can this magnet be used as a bicycle mileage accessory, but it can also find some uses in the everyday home, such as being a magnet and making simple and convenient stickers on the refrigerator. Specification: Material: Plastic + Metal + Magnet Color: Black Size: Approx. 15*10mm / 0.59*0.39in Weight: Approx. 3g Package List: 1 x Magnet