Made of superior, sturdy and durable brass, easy to use. Features excellent corrosion resistance, strong insulation resistance, environmental protection. Includes extruder nozzle, and tube, and screwdriver, complete kit, easy to install and replace. Features -Color:As Shown. -Material:Brass. -Size: About12.00X10.50X3.00cm/4.72X4.13X1.18in. - Lower retraction means time saved every time the extruder retracts. -Over the course of a prints, a few milliseconds here and a few there add up to a lot of time saved. -This item is far superior to the white PTFE tubing supplied with most 3D printers. Its much smoother to feed filament through. -When printing it reduces the drag on the extruder giving a much smoother travel and prints quality. -It is made of high-quality brass materials, sturdy and has a long service life.