Specifications:Total length 89mm; Large outside diameter 25mm; Small outside diameter 16mm; Inserted 4MM outer diameter tube Material: MetalCable length: 1 m Feed method: Proximity / RemoteInstallation: external thread connectionNozzle size: 0.4，0.3 and 0.2 optional (default is 0.4mm)Print Material: 3.0 and 1.75mm consumables (including materials: ABS， PLA， PVC， Wood， etc.)Features:High-quality 3D printer print head J-head kit， suitable for J-head / E3D structure.Good metal material， 3D printer specifically designed for stainless steel connecting pipes， use of stainless steel heat slowly and partial cutting and other measures， which can effectively prevent heat upload， avoiding the problem of expansionof the feed in advance.Package include:1X Metal HotEnd Full Set Assembled