some pins have specialized functions: Serial: 0 (RX) and 1 (TX)

Nozzle: now easily changeable as you can just screw it on and off Brass pipe with flange: the flange will prevent leakage around the PEEK part Telephone tube: it's main purpose is heat transition to prevent plugs

We believe it offers a superior alternative to using masking tape or heat resistant films (such as kapton) on your FFF 3D printer's build plate

It has a very large build volume and at the same time very high resolution and precision

the print core EEPROM chip remembers the size and type of your nozzle

PCB Board for Creality CR2020 Smøremidler some pins have specialized functions:CR2020 Hotend PCB CR2020 Hotend PCB Spare part for CR2020