🔧 Spring into Action with the Ultimate Assortment! Constructed from high-quality metal and plastic. Visual guide included for effortless identification. Perfect for repairs, prototyping, and creative projects. Includes multiple compression and extension spring sizes. Compartmentalized case for easy access and selection. Variety of sizes Storage case 150pc kit The Amtech S6210 Metal Spring Assortment Set features 150 pieces of compression and extension springs in various sizes, perfect for a wide range of repair and creative projects. It comes with a convenient storage case and a user-friendly guide, making it an essential tool for both amateurs and professionals.