Features 1、Made of high‑quality material, anti‑aging, radiation resistance, low permeability, long‑term exposure to the atmospheres. 2、Excellent resistance to high and low temperature, little effect on temperature, wide temperature range, applicable temperature of 190°C and +260°C. 3、There is no need to worry about the filament being scratched or broken, making the filament mounting easier and smoother. 4、Practical upgrade accessories completely fit for Ender 3/Ender 3 Pro printer, which can offer better performance. 5、Easy to install, no complicated tools and operations required, bring much convenience for you. Specification Item Type: 3D Printer Accessories Material: ABS Model: for Ender 3/Ender 3 Pro Package List 4 x Wheel 4 x Spring 2 x Pneumatic Connector 2 x Nozzle 1 x Tube