1. A spring set of 300 pieces in 30 different sizes Our spring set contains 30 different sizes, with 10 pieces for each size, making a total of 300 pieces in one box. 2. Compression springs with certain qualities The surface is smooth without burrs, having good fatigue strength and relatively high ductility. The spring coils are durable and elastic, capable of providing appropriate tension. 3. Each size of spring steel comes with independent packaging Dimensions: A, B, C A is the wire diameter, B is the outer diameter, and C is the free length. The specific dimensions are as follows: 0.016 inches × 0.2 inches × 0.39 inches; 0.016 inches × 0.2 inches × 0.59 inches; 0.016 inches × 0.2 inches × 0.79 inches; 0.016 inches × 0.2 inches × 0.99 inches; 0.016 inches × 0.2 inches × 1.19 inches; 0.02 inches × 0.24 inches × 0.39 inches; 0.02 inches × 0.24 inches × 0.59 inches; 0.02 inches × 0.24 inches × 0.79 inches; 0.02 inches × 0.24 inches × 0.99 inches; 0.02 inches × 0.24 inches × 1.19 inches; 0.023 inches × 0.276 inches × 0.39 inches; 0.023 inches × 0.276 inches × 0.59 inches; 0.023 inches × 0.276 inches × 0.79 inches; 0.023 inches × 0.276 inches × 0.99 inches; 0.023 inches × 0.276 inches × 1.19 inches; 0.027 inches × 0.295 inches × 0.39 inches; 0.027 inches × 0.295 inches × 0.59 inches; 0.027 inches × 0.295 inches × 0.79 inches; 0.027 inches × 0.295 inches × 0.99 inches; 0.027 inches × 0.295 inches × 1.19 inches; 0.031 inches × 0.33 inches × 0.39 inches; 0.031 inches × 0.33 inches × 0.59 inches; 0.031 inches × 0.33 inches × 0.79 inches; 0.031 inches × 0.33 inches × 0.98 inches; 0.031 inches × 0.33 inches × 1.18 inches; 0.035 inches × 0.37 inches × 0.39 inches; 0.035 inches × 0.37 inches × 0.59 inches; 0.035 inches × 0.37 inches × 0.79 inches; 0.035 inches × 0.37 inches × 0.98 inches; 0.035 inches × 0.37 inches × 1.18 inches; 0.039 inches × 0.39 inches × 0.39 inches; 0.039 inches × 0.39 inches × 0.59 inches; 0.039 inches × 0.39 inches × 0.79 inches; 0.039 inches × 0.39 inches × 0.98 inches; 0.039 inches × 0.39 inches × 1.18 inches; 0.043 inches × 0.41 inches × 0.39 inches; 0.043 inches × 0.41 inches × 0.59 inches; 0.043 inches × 0.41 inches × 0.79 inches; 0.043 inches × 0.41 inches × 0.98 inches; 0.043 inches × 0.41 inches × 1.18 inches. 4. Mechanically compressed springs that are easy to store All compression springs are neatly packed in independent packages with corresponding size labels, allowing you to quickly select the appropriate spring.