Cyclists, these skewer springs are one of those small but crucial bike parts you don't think about until you need them! You get 10 springs in the pack, which is great because these little guys can get lost easily during maintenance. Made from stainless steel, they're rust-proof and have excellent elasticity to keep your quick release mechanism working properly. Each spring is about 12mm tall and designed to fit most front and rear quick release skewers on mountain bikes, road bikes, and pretty much any bike with quick release hubs. Installation is simple - just release your quick release skewer, replace the old springs, and tighten everything back up. They provide that essential elastic pad effect that prevents your quick release from coming loose during rides. Having a supply of these means you can maintain your bike properly and avoid those annoying moments when you realize a spring is missing or worn out. The quality feels solid - good tension and durability that should last through many uses. Whether you're a casual rider or serious cyclist, having spare parts like these can save you from being stranded. Your quick release system will work smoothly and securely with these proper replacement springs. Definitely one of those affordable bike maintenance essentials worth having in your toolkit!