Specifications:
1. Diameter(OD): 4.8mm/0.19inch
2. Length: 8mm/0.32inch
3. Internal diameter: 3.20mm/0.13inch
4. Material: stainless steel
5. The surface of the uniform and beautiful state.
6. Good formability， homogeneous elastic.
7. High plasticity， fatigue resistance， heat corrosion resistance.
8. Environmental for protection non-toxic pollution-free.

Package included:
12 x 3D Printer Extruder springs