High quality: galvanized steel, with good tension, good elasticity, very strong and durable. DifferentSizes: The package includes 200 springs, and there are 2 different sizes to meet your different needs. Box Accessory packaging: The box can be used as a storage box to store small ornaments, fishing hooks, buttons, needles, etc. It is easy to register and use, and easy to transport. Widely used: Suitable for tooling equipment, bicycles, automobiles, spare parts, locks, automobiles, plastics, electronic products, hardware, molds, toys, etc. Quality assurance: Within 30 days of receipt of the product, if there is any quality problem, please contact us in time and give you a satisfactory answer. Traction Springs Compression Springs, Spring Assortment 200 Pieces With Box, Meet Your Multiple Needs. Features Classified Storage: The springs are placed in 12 compartments of different sizes, you can easily and quickly find the springs you need, which will save you time. SpecificationMaterial: galvanized steel Quantity: 200 Dimensions: 210 x 110 x 30 mm Weight: 352g Note: 1. Please use the spring within a reasonable stretching range. 2. The spring is a small object, please keep it away from children to avoid swallowing. Traction Springs: 5 * 10 10 Pieces 5.5 * 14 10 Pieces 6 * 10 10 Pieces 8 * 13 8 Pieces 7.5 * 17 10 Pieces 8.5 * 26 12 Pieces 8 * 50 12 Pieces 7 * 55 12 Pieces 4 * 70 12 Pieces 5 * 34 8 Pieces 7 * 25 10 Pieces 8 * 23 10 Pieces Compression Springs: 7 * 13 10 Pieces 6 * 12 10 Pieces 5.5 * 27 10 Pieces 9.5 * 16 6 Pieces 9 * 18 12 Pieces 9 * 35 8 Pieces 5.5 * 38 10 Pieces 7 * 19 10 Pieces Assembly content: 100 x Springs