200 Piece Combination Spring Set, Extension Springs, Flex Springs, Stainless Steel Compression Springs, Steel Springs (with Box)

High-quality materials: The extension spring is made of high-quality materials, is stable and durable, flat and smooth, with smooth rivets, rustproof, highly ductile and fatigue-resistant. Smooth edges: Our coil springs are carefully crafted; the surface is scratch-resistant and the internal spring is sturdy and break-resistant. The edges are smooth and gentle on the hands. A practical household tool: The combination of extension and compression springs is easy to handle and store, making it a must-have for every home. You will love this coil spring. Package contents: 8 compression springs and 12 extension springs of various sizes: choose the right size for your needs. Enough for everyday use. Versatile applications: Steel springs are widely used in automotive engines, household appliances, medical technology, electronic products, and measuring instruments.