Description: It comes with 20mm long Teflon ptfe core. Application: for MK8 makerbot 3D printer extruder. Specification: Material: stainless steel Size: M6 x 30 Outer thread: M6 Total Length: 30mm Outer Diameter: 6mm Inner Diameter: 2mm (with Teflon ptfe); 4mm (the other side) Suitable for 1.75 Filament Package Includes: 5 Pieces M6x30 Teflon Nozzle Throat
