Features: brand new and high quality Made of high quality alumina, it's a metal aluminum with high hardness, not easy to be corroded, and high temperature resistance; Good wear resistance, no deformation, the surface is red anodized. Precise size holes, convenient installation and easy replacement. High temperature performance, stable shrinkage and durable; with stability, fixity, applicability, and flexibility; Fir for Ender 3, Ender 3 Pro，Ender 3 V2，CR 10 (Will NOT directly fit CR10 V2, V3)，CR 10S，CR 10 mini，4CR 10 S4，CR 10 S5，CR 20，CR 20 Pro Specifications: Item Type: Extruder Model Number: Dual Gear Extruder Material: Mixed Use: For Ender 3 CR10 CR-10S PRO Type: MK8 Extruder Package Includes: 1 Set Dual Gear Extruder note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.