1. The front derailleur fixing screw washer of this road bicycle is specially designed for folding bicycles. It is made of metal, featuring good durability and stability. 2. Its unique curved half - moon washer and semi - arc pad design can perfectly fit folding bicycles, providing more stable support for front derailleur fixing and ensuring the precise operation of the front derailleur system during cycling, thus making the ride smoother. 3. The specification of this product is a combination of titanium alloy front derailleur screws and washers. This combination can not only improve the overall performance of the accessories but also extend their service life, ensuring that they are not easily damaged even after long - term use. 4. This product sells well in regions such as Africa, Europe, South America, Southeast Asia, North America, Northeast Asia, and the Middle East. It is highly recognized and trusted by consumers and is a good choice for folding bicycle accessories.