Feature Highlights: 1. Premium Material: Made from high-quality brass, these tire valve cores are reliable, safe, and durable. They effectively prevent leaks from old or worn-out valves. 2. Practical Tools Included: Each kit comes with valve core removers for easy installation and removal, plus protective caps to keep valve cores clean and damage-free. Designed for a precise fit with Presta valve stems. 3. Easy to Install: Simply remove the old valve core, insert the new one, tighten it securely, check the fit, and finish by screwing on the cap. Suitable for most tubeless road bikes and bicycles. 4. Complete 40-Piece Kit: Contains everything you need—40 valve cores, 8 removal tools, and 40 protective caps—for multiple repairs or replacements. 5. Wide Compatibility: Ideal for maintaining and repairing Presta valves on various bikes, ensuring a consistent and secure seal. Product Details: This all-in-one valve core replacement kit is built for reliability and ease of use. The brass valve cores offer long-lasting performance and help stop air leaks in tired valves. With the included removal tools, swapping cores is quick and tool-free. The protective caps keep out dirt and prevent damage. Whether you're a casual rider or a cycling enthusiast, this kit makes valve maintenance simple and hassle-free. Specifications: - Material: Brass (valve cores), Aluminum Alloy + Plastic (tools & caps) - Color: As shown in images (Note: Slight color variations may occur due to lighting or screen settings, but this does not affect performance.) - Package Includes: 40 x Valve Cores, 8 x Valve Core Removers, 40 x Plastic Valve Caps - Compatibility: Designed for Presta valves on tubeless road bikes and standard bicycles. Note: Minimal size or color differences may exist due to manual measurement or display variations, but functionality remains unaffected. Package includes listed items only.