These 4″ pipe torsion spring inserts are used with rolling steel door torsion spring assemblies.
The inserts fit compatible 4″ pipe systems and accept 2.875″ inside diameter and 3″ inside diameter round wire torsion springs. The 1.25″ bore is designed to accept a 1.25″ shaft.
This set is commonly used for rolling steel door spring assembly repair, replacement, or new torsion spring hardware installation.
Package Note*: Sold as a set.
