Extension Spring
Most of the Compressing spring and Extension spring are used in parts which controlling linear motion cyclically. These springs features showing when the parts being borne tensile force or pressure can back to original shape. Related using: Mechanical pencils, shock absorbers, switches and culture creative products.
LiaChan serve standardized length specifications by inside diameter and wire diameter. There are some hardware stores selling these springs in some cities. If you need customization, we can serve different number, pressure, length, inside diameter and material.