[Anti-rust Material] --Our compression springs are made of 304 Stainless Steel, which is reliable and reusable. It is very resistant to oxidation, corrosion and rust for a long service time.
[Package Include] -- 15 different sizes spring assorted in individual compartment, total 450 pieces in box.
[Easy to Carry] -- Comes in a transparent box, which is light and small, easy to carry and store. 15 compartment storage with size label marked, you can pick up your target size easily and quickly.
[Fit Most Use] -- 15 sizes would be completely enough for all your DIY project and Home repair, such as electrical equipment, 3D printer, piano, pens, toys, scissors, pliers, home tool, etc.