Features: 1.A much needed improvement for ender 3 ,ender 3 pro ,cr 10. Great and perfect upgrade set. 2.if you want to try to redesign your printer on direct extrusion,modification is reversible and that the additional details are minimum, everything remains regular. 3.No wires with a retraction distance of 3mm to 50mm per second. It greatly improves the finishing of the pieces. I highly recommend to anyone needing to print flexible filaments. 4.if your original bowden extruder sometimes popped out the guiding tube, ruining your print and malfunctioning. this upgrade set will erase the loose-tube issue. Specifications: 100% Branded New Material: aluminum alloy Surface treatment: anodizing Color:black Suitable for: Creality CR10 Ender-3 Note: Please allow minor deviation due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Include: 1Set Extruder Adapter Plate Kit