
1. Package: 200Pcs Springs. 2. Material: galvanized steel. 3. Compression springs: -5.5x17.5/ -5.5x38.0/ -6.5x10.0/ -7.0x12.5/ -7.0x19.0/ -9.0x35/ -9.5x16/ - 9.5x19mm (the quantity as the picture shows). 4. Tension springs: -4.0x79.5/ -4.5x44.5/ -5.0x20.5/ -5.5x25.5/ -6.5x22.0/ -7.0x98.0/ -7.0x51 .0/ -8.0x28.5/ -8.0x31.5/ -8.0x44.5/ -8.5x36.5/ -8.5x47 mm. (The quantity as the picture shows.) 5. Usage: Widely used for automotive tools and engines, medical devices, large equipment, electronics and sensitive measuring instruments.