As a factory, we are proud to offer our High Speed Bicycle Bearing Z2 6913 RS Deep Groove Ball Bearings. These top-quality bearings are designed with the utmost precision and are made to withstand even the toughest of conditions. Featuring advanced Z2 technology, they are perfect for high speed cycling applications. With a deep groove ball bearing design, these bearings offer incredible durability and reliability. They are also easy to install, ensuring that you can get back on the road in no time. Trust the experts at our factory for all your bearing needs.