[High Quality Material]: Our tension springs are made of galvanized steel, sturdy and elastic, which provides extra durability under proper tension and will not rust easily. [Various Sizes]: We offer 12 sizes of tension springs and 8 sizes of compression springs to meet your different needs. Thanks to all kinds of springs, you can always find the right one. [Obvious Types]: These springs are clearly sorted in a storage box, so you can quickly find the springs you want during and after use. In addition, the cardboard cover included a practical instruction with pictures. Don't waste any more time. [Widely Used]: The steel wire tension spring replacement set includes compression and extension springs, suitable for tools and equipment, hand tools, automobiles, furniture, spare parts, etc. Material: galvanized steel Item Weight: 340g Color: Silver Box Size: 21 × 11 × 3cm Package Content: 20 spring sizes, 200pcs in total, in a PP plastic box Includes 20 popular sizes: EXTENDED SPRINGS: 5.0