Upgrade your bike's performance with this set of copper valve cores for bike tires. Crafted from copper, these valve cores are designed to provide a reliable and airtight seal, ensuring your tires stay properly inflated. Their durable construction offers reliable resistance to wear, making them a dependable choice for long-term use. Features -Color:Silver -Material:Copper -Size: 2.60X0.45X0.45cm/1.02X0.18X0.18in -Durable construction: These bike valve cores use premium copper, offering lasting durability and resistance to wear and compacts. -Enhanced air tightness: Precision engineering makes a proper fit within the valve stem, providing a for better retention of tire pressure. -Easy installation: These universal valve cores seamlessly integrate with most bike tire inflation systems, making them a must-have for cyclists. -Smoother ride: By keeping your tires properly inflated, these valve cores contribute to a smoother and more comfortable ride. -Ample replacement: This set includes multiple valve cores, providing you with spares for future use and ensuring you're always prepared for maintenance needs. Package list: 20 x valve cores