Micro-Swiss HW-NOZ-MODMK8-04 Plated Brass Wear Resistant Nozzles, 1.75 mm, RepRap - M6 (E3D/Hexagon) 0.4 mm, Bright Nickel USA made Micro-Swiss Plated Brass Wear Resistant Nozzles extend nozzle life dramatically when using abrasive materials. Ultra-hard coating creates a low friction nozzle that outlasts uncoated brass. Brass base material retains thermal conductivity for unchanged thermal performance. Fit a large variety of machines, check listing name carefully to make sure it fits your printer, or get in touch with us if you are unsure.