describe: * brand new and high quality * Made of high-quality materials, and practical Specification: Name: Bicycle center axle washer Process: CNC + anode Material: ultra-light aluminum alloy Inner diameter: about 35mm Outer diameter: about 42mm Thickness: 1/1.5/2/2.5/3mm Color: Black/Red Purpose: This spacer is used for fine adjustment of the bottom bracket/freewheel base. The package includes: 5*washer notes: 1. Due to various factors such as monitor brightness, light brightness, etc., the actual color of the product may be slightly different from the picture displayed on the website. 2. Please allow for slight manual measurement deviations in 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 976 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.