Nozzles Specification： 1. Material: Brass 2. Outer Thread Diameter: M6 3. Input Diameter: 1.75mm 4. Quantity: 2 Pcs PTFE Tube Specification： 1. Diameter: 2mm 2. Length: 29.8mm 3.Quantity: (2 Pcs) After replacing the nozzle, please recalibrate the distance between nozzle and build plate to ensure the quality of print parts.