Features 200Pcs in All: Including compression spring and extension springs, this assortment will meet your varied working needs. Sturdy Design: Comes with good elasticity and high strength, the spring ensures uniform force for reliable application. Practical Use: Allows for flexible use in home maintenance and DIY on door, automotive, piano, toy, scissor and so on. Good Material: Adopting galvanized steel, has great durability with corrosion, and can even use in humid environment. Easy to Carry: Designed to have a light weight and a compact size, the spring assortment is simple to carry and store. Specification: Item Type: Spring Material: C75 Galvanized Steel Package List: 200 x Spring Package List 200 x Spring