Features APPLICABLE MODEL: Dual gear extruder aluminum block kit, suitable for CR10S PRO, for Ender 3 PRO, for Ender 5 3D printer models, with good compatibility. STABLE FEEDING: Dual gear extrusion structure, large extrusion force, to ensure stable feeding, need to change the steps of the extruder from 100 to 140. INCLUDED PARTS: The kit includes the extruder body, spring, screws and connector, etc., needs to be assembled by yourself for various DIY projects. ALUMINUM ALLOY: The DIY extruder is made of aluminum alloy, light in weight, wear resistant and corrosion resistant, and has good heat dissipation. EASY TO INSTALL: This is a right hand extruder assembly kit, easy to install, not easy to lose steps, you need to make sure the installation direction is correct. Specification: Item Type: Extruder Aluminum Block Kit Material: Aluminum Alloy Color: Red Applicable Models: For CR10S PRO, for Ender 3 PRO, for Ender 5, etc. Features: Dual gear extrusion structure design, high extrusion force, to ensure smooth feeding, not easy to lose steps Assembly: DIY modules need to be assembled by yourself Package List: 2 x Extruder Body 1 x Spring 6 x Screws 1 x Connector 1 x Connector Snap 3 x Accessories Note: This is a right hand extruder. The wrong installation direction will affect the Z axes screw. If the motor is replaced in the middle of the printer, the hole height may be inconsistent after installation. Package List 2 x Extruder Body 1 x Spring 6 x Screws 1 x Connector 1 x Connector Snap 3 x Accessories