Designed for 3D Printers: This metal hotend extruder head is compatible with CR-10 series and Ender 3 3D printers. Filament Switching: Features a 2-in-1-out design that allows switching between two types of filaments. Stable Structure: Equipped with a 0.4mm brass nozzle. The heater block and radiator are secured with two screws for improved stability. Single or Dual Color Printing: Supports single-color and dual-color printing, but does not support color mixing. Durable Metal Construction: Made from strong metal materials for durability, wear resistance, and consistent performance. Package Includes: 1 x Metal Hotend Extruder Head Item Type: Metal Hotend Extruder Head Material: Metal Application: Compatible with CR-10 series and Ender 3 3D printers