General description 200 pieces of assorted extension and compression springs made from galvanized steel, packaged in a convenient storage box. Technical specifications Material: Galvanized Steel Compression Springs: -5.5x17.5 mm, -5.5x38.0 mm, -6.5x10.0 mm, -7.0x12.5 mm, -7.0x19.0 mm, -9.0x35 mm, -9.5x16 mm, -9.5x19 mm Tension Springs: -4.0x79.5 mm, -4.5x44.5 mm, -5.0x20.5 mm, -5.5x25.5 mm, -6.5x22.0 mm, -7.0x98.0 mm, -7.0x51.0 mm, -8.0x28.5 mm, -8.0x31.5 mm, -8.0x44.5 mm, -8.5x36.5 mm, -8.5x47 mm Usage These springs are widely used in various applications including automotive tools and engines, medical devices, large equipment, electronics, and sensitive measuring instruments.