General description 200 pieces spring assortment including various small tension and compression springs, all conveniently stored in a storage box. Technical specifications Material: Galvanized steel Compression springs sizes: -5.5 x 17.5mm, -5.5 x 38.0mm, -6.5 x 10.0mm, -7.0 x 12.5mm, -7.0 x 19.0mm, -9.0 x 35mm, -9.5 x 16mm, -9.5 x 19mm Tension springs sizes: -4.0 x 79.5mm, -4.5 x 44.5mm, -5.0 x 20.5mm, -5.5 x 25.5mm, -6.5 x 22.0mm, -7.0 x 98.0mm, -7.0 x 51.0mm, -8.0 x 28.5mm, -8.0 x 31.5mm, -8.0 x 44.5mm, -8.5 x 36.5mm, -8.5 x 47mm Usage Widely used for automotive tools and engines, medical equipment, large appliances, electronics, and sensitive measuring instruments.