1Specially designed to fit for V6, for Ender3, for Prusa. 2Nozzle can be easily and freely replaced when the heating block is fixed. 3Fix the position of the heating block from the side, use tools to remove and replace the nozzle and the heating block. 4No need to troubleshoot other printer accessories when using this tool; this tool version is suitable for Prusa printers using V6 heating blocks. 5Made of high quality metal material, durable in use, long service life.Item Type: 3D Printer Parts Material: Metal Square Mouth End Outer Diameter: 7/8/9mm Applies To: for V6, for Ender-3, for Prusa3 x Hex Socket1 x Wrench1 x Dual Purpose Nozzle Removal ToolPlease note that the new type and old type of this product will be sent randomly and make sure you will not mind before ordering.