These Titanium Bicycle Rear Derailleur Jockey Wheel Bolts are made of high-quality Titanium, which is strong and durable, and has a longer service life than other materials. The surface of the product is treated with anodizing/nitride, which has good corrosion resistance and high hardness, making it more wear-resistant and not easy to rust. The product is suitable for mountain bikes, road bikes and other types of bicycles, and is widely used in derailleur cages, rear derailleurs, and other bicycle parts. The package includes 2pcs M5x14.2mm Titanium Bicycle Rear Derailleur Jockey Wheel Bolts, which is enough for your replacement or spare.