Compatibility: die springs fit for most 3D printer bed, die machinery or other applications, perfect for 3D printer Ender 3 heat bed springs.
Feature: sturdy, rectangular section, and keeps 3D printer bed level better.
Size: 0.31in/8mm (OD), 0.16in/4mm (ID), 0.78in/20mm (Free Length).
Loading Grade: Light Load, Model: TF 8mm*20mm, Color: Yellow.
Aokin 3D printer accessories use high-quality raw materials and fine workmanship, If you have any question about our product, please feel free to contact us, we will do our best for you.