Catalog > Internet of Things (IOT) Related Products > More Platforms Extruder Levelling Springs Extruder Levelling Springs for 3D Printer DHG 4X EXTRUDER LEVELLING SPRING PACK OF 4 EXTRUDER LEVELLING SPRINGS FOR 3D PRINTER. DIAMETER(OD): 4.8MM. ID: 3.20MM. LENGTH: 8MM. MATERIAL: STAINLESS STEEL Discontinued Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Features Diameter(OD) : 4.8mm/0.19inch Length : 8mm/0.32inch Internal Diameter : 3.20mm/0.13inch Material : Stainless Steel Good formability, homogeneous elastic High plasticity, fatigue resistance, heat corrosion resistance Environmental protection non-toxic pollution-free Package Included: 12 x 3D Printer Extruder Springs