Features 1、Aluminum block are more resistant to corrosion than plastics, have crack resistance and better extrudability. 2、The appearance where the aluminum block is installed quickly has been oxidized and sandblasted, allowing faster printing with continuous quality. 3、The aluminum block has an optimized design, the extrusion force is uniform, and can work efficiently. 4、This is aluminum block that is easy to assemble. Our metal extruder kit includes the required parts and can be assembled quickly. 5、The aluminum block is more flexible and can be debugged, which can be applied for 3D printers. Specification Item Type: Extruder Mounting Block(Short Handle) Material: Aluminum Alloy Package List 2 x Aluminum Block 1 Package Screw Accessories