This Zipp bearing shield is a must-have for any cyclist looking to upgrade their bike's hub. With a front or rear option, this shield is perfect for those who want to switch up their bike's setup. The shield is designed with 18 hole spoke holes and a 5.00 inch width, making it a comfortable fit for most bikes. The Zipp bearing shield is made from high-quality materials and is built to last, ensuring that you get the most out of your bike's hub. This hub part is perfect for those looking to improve their bike's performance and stability, making it an essential component for any serious cyclist.