Package Include: Upgrade Ender 3 Extruder Kit and 4pcs 3D Printer Bed Springs. This is a good fit replacement for Ender 3. It is all metal. The extra springs are good also for the bed.
Ender 3 Metal Extruder Compatible for Ender 3/Ender 3 Pro/Ender 3S/Ender 3 V2/Ender 3 Max/Ender 5/Ender 5 Pro, CR-10/CR-10S, etc.
Adjustable Extrusion Spring Tension Design: the extrusion spring tension could be adjusted by tighten the screw. 40 Teeth drive gear feeds the 1.75mm filament, compatible with PLA/ABS/Wood/TPU/PTEG.
Yellow Die Spring Size: Hole Diameter (OD):0.31"/ 8mm; Rod Diameter (Inner Dia):0.2"/ 5mm; Length:0.98"/ 25mm; This 3D Printer bed leveling springs:The length of springs are 25mm, which is slightly longer than the ender 3 series printers(Including ender 3/ender 3 pro/ender 3 v2). To fit the printer, the spring would need to be cut shorter than the original spring, or the hot bed would need to be adjusted higher to fit the spring.
Easy To Install: DIY kit and you need to assemble by yourself. It makes loading the filament easier and smoother, no worries about filament scraping or breaking.