Feature: *Brand new and high quality *Made of high quality material, high quality bearing steel, longer service life, higher accuracy, less noise *Low noise and low friction, low noise, high speed, and the process is not easy to hot * angle: inside 45° angle, outside 45° angle *easy to use and install，good compatibility Specifications: Product Name: Mountain Bike Headset Bearings Material: bearing steel angle: inside 45° angle, outside 45° angle size: p03. Outer 41MM*inner 30.15MM height 6.5MM p08. Outer 41.8MM*inner 30.15MM height 6.5MM p16. Outer 52MM*inner 40MM height 7MM p17. Outer 47MM*inner 34.1MM height 7MM p19. Outer 49MM*inner 37MM height 7MM Gross weight: 40g Package Included: 2×Mountain Bike Headset Bearings Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. 【PREMIUM QUALITY MATERIAL】This product is carefully crafted with high quality materials to ensure its durability and longevity. Whether for daily use or special occasions, it provides excellent performance and a great user experience. 【VALUABLE VALUE FOR MONEY】Offering excellent performance and quality at a reasonable price, this product offers excellent value for money. Whether for your own use or as a gift, it is a very cost-effective choice and definitely worth every penny. 【RETURNS SERVICE】We offer 30 days hassle-free returns. If you are not satisfied with the product, you can return it within 1818 days for a full refund. We are committed to ensuring that every customer's shopping experience is of the highest standard. 【HIGH ADAPTABILITY】This product has been carefully designed to be perfectly compatible with a wide range of devices and scenarios. No matter which model or brand you use, it can be easily adapted to provide the best experience. 【USER-FRIENDLY】The product design is simple and clear, and the operation is easy to understand, even for the first time. Whether you are a novice or a veteran, you can quickly master it and enjoy convenience and efficiency.