Ⅰ. Built to last: Compression Springs Assortment Kit made from corrosion‑resistant 304 stainless steel. Smooth surfaces and rust resistance mean performance and service life in damp or moisture environments. Ⅱ. Wide size selection: 300 springs in 23 different sizes provide flexibility for many repairs and projects. Sizes range from 0.011 × 0.16 × 0.39' (wire diameter × outer diameter × length) through larger variants, so you can match the correct spring without compromise. Ⅲ. Ready to use and easy to find: Each 304 Stainless Steel Small Springs Set comes in a clear plastic case with labeled compartments for neat organization. Quick identification minimizes downtime when you need the right mechanical mini spring. Ⅳ. Consistent function and performance: Designed as compression springs for load and rebound in small mechanisms. Suitable where repeatable tension, compact size, and corrosion resistance are required. Ⅴ. Broad compatibility: Ideal for household repairs and mechanical work involving doors, curtains, cars, bicycles, pianos, scissors, electronics, tools, umbrellas, vintage record players, toys, and pliers. Works well for both DIY and professional use. Ⅵ. Practical use scenarios: a worn umbrella spring or scissor spring to restore smooth opening and closing. Swap small springs in a vintage record player or piano action to recover proper tension and consistent performance. Keep assorted springs in an automotive or bike kit for quick fixes to latches, brake mechanisms, or trim fasteners. Ⅶ. What you get: a durable, corrosion‑resistant 304 stainless steel compression spring assortment (300 pcs, 23 sizes) in a labeled, clear‑plastic storage case—organized, versatile, and ready for immediate use.