For 32 Bit V4.2, Creality Offers The Cr Touch Auto Bed Leveling Sensor Kit. Package Include: CR Touch Auto Bed Leveling Sensor,Capricorn PTFE Teflon Tubing 1M, Aluminum Extruder?4* Premium Metal Bed Springs, 2*PC4-M6 Pneumatic Fittings, 2*PC4-M10 Fittings, 2*0.4mm Nozzle. Compatible: This CR Touch fits for Creality Ender3 v2/Ender3/Ender3 Pro/Ender5/Ender5 Pro/CR-10 with 32 bit v 4.2.2(4.2.7) mainboard.Notice:Just for 32 bit motherboard printers. Easy firmware installation:Simply download the CR Touch firmware from the Creality Official Website and save the file to your printer?s memory card. Insert the card in to your printer. Turn on the printer and wait a few seconds for the firmware to install. Enhanced leveling with precision of +/- 0.005mm. This allows for easy leveling with pinpoint accuracy. This bundle includes Capricorn PTFE Teflon Tubing which is enhanced with a proprietary blend of high performance additives. It was developed specifically for 1.75mm filament with an extremely precise 1.9mm 0.05mm internal diameter. Reduces the ""wiggle room,"" or buckling, inside the tube, allowing you to print flexible filaments even on the longest Bowden systems.The aluminum extruder is lightweight and strong, ensuring a more even feed rate over time .