20pcs 304 Stainless Steel Compression Spring 0.5mmx6mmx20mm Spring Long Return Spring

Excellent surface finish: the surface ofthe steel wire is evenly polished and very smooth Non-corrosive: the spring is made of 304stainless steel and does not rust Ultra-precision manufacturing technology:The manufacturing process of this spring has multiple processes , their sizesare different, and there are many specifications. Made of stainless steelspring wire,  with high elasticity and good accuracy, small installation sizeand large force.