3D Printer V5 V6 Brass Extruder Nozzle Removable Tips 0.2, 0.3, 0.4 and 0.5mm M6 Thread. Specification:It is compatible with most heating blocks with m6 thread, such as v6, mk8, um2, olson, etc.Material: Stainless Steel / BrassThread: M6Filament size: 1.75mmNozzle size options: 0.2, 0.3, 0.4, 0.5mm Package include: 1 x Nozzle ( size and quantity as per selected )