Features: Enhances nighttime safety with our glow under dark valves caps that automatically illuminate in dark , boosting visibility for riders and drives to prevent accidents during low light conditions. Crafted from strong ABS component , these tire valves caps feature excellent effect resistance, wear proof design, and weatherproof performances for long lasting use in any climate. Ideal for night commuters, long distance cyclists, city dwellers, and outdoor enthusiasts who value stable safety and convenience in their daily routines. Perfect for evening rides, city commuting, or adventures in diverse environments where enhanced visibility is essential for secure travel. The multi color glow design adds a stylish touch while ensuring compatibility with most bicycles, motorcycles, and cars, offering both functionality and aesthetic appeal for versatile vehicle customization. Specifications: Component : ABS Size: about 1.3x1.7cm/0.51x0.67inch Package Includes: 15xTire valves Caps Or 20xTire valves Caps Or 30xTire valves Caps note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.