Features:Pack of 5 x 3D Printer Extruder Hotend 30mm Length 1.75mm Nozzle Inputting Tube( for MK8 Makerbot Reprap Prusa I3 3D Printer) and 5 x 3D Printer 0.4mm Extruder Brass Nozzle Print Head. Nozzle Throat: Outer Thread - M6; Inner Diameter - 2mm; Length - 30mm; Filament Diameter - 1.75mm; Material - Stainless Steel. 0.4mm Extruder Brass Nozzle Print Head: Color - Golden; Material - copper (brass); Size - 5x13mm; Input Diameter: 1.75mm; Output Diameter: 0.4mm. Compatibility: compatible with all 1.75mm PLA ABS 3D Printer Quanlity:15pcs/lot (5 piece 1.75mm Nozzle Inputting Tube,5 piece 3D Printer 0.4mm Extruder Brass Nozzle Print Head,5 piece Heater Blocks Hotend) Package Includes: 5 piece 1.75mm Nozzle Inputting Tube 5 piece 3D Printer 0.4mm Extruder Brass Nozzle Print Head 5 piece Heater Blocks Hotend Specifications: Material: Steel+Copper Weight: 55g Size: As picture shows Note:1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.