0.7mm Expansion Extension Expanding Tension Springs Return Spring Large/Small 

Product Features：
-A2 stainless steel material, anti-corrosion and anti-rust. Durable.
-High elasticity, not easy to deformation. Environmentally friendly material. Easy to install.
-Support various sizes, materials, shapes and surface customization, applicable to a variety of occasions, to meet your multiple needs.

Product specification：
-Name:tension spring
-Material: A2 stainless steel
-Type: Expansion Springs