CREATCABIN 1 Box 300Pcs Extension Spring Assortment Kit Compression Spring Set 20 Different Sizes Carbon Steel Small Metal Mechanical Repair Replacement Sets for Home Repairs Tools DIY Craft Project

["1 Box 300Pcs Extension Spring Assortment Kit: The package contains 91 springs and 209 metal tubes in total, sufficient quantity and mixed sizes meet daily replacement needs, and come with 1pc plastic box to help you organise them","Carbon Steel Material: This compression spring set is made of thick carbon steel, resists oxidation and fatigue deformation, springs maintain stable strong rebound force; tubes are solid and pressure proof for long term repeated use","20 Sizes Compression Spring Set: Package includes 6 sizes spring and 14 sizes tube, 20 sizes in total; the largest size is spring: 3.5 x 0.9cm(1.38 x 0.35 inch), tube: 4.45 x 0.85cm(1.75 x 0.33 inch); the middle size is spring: 12.5 x 7mm(0.49 x 0.28 inch), tube: 29.5 x 7.5mm(1.16 x 0.30 inch); the smallest size is spring: 10 x 6.5mm(0.39 x 0.26 inch), tube: 19 x 5mm(0.75 x 0.20 inch);","Easy to Store: Extension spring set comes with 12 grid divided clear plastic box, different sizes sorted separately for no mess, super easy to find, count and carry, keeps neat organization for long term storage","Multiple Uses: This compression spring assortments are ideal for repairing and installing doors and window, curtain walls, cars, bicycles, mechanical equipment, umbrellas, water bottles, razors, airplanes, antique record players, pliers, pianos, scissors, electrical appliances, etc"]