MakerBot Smart Extruder+ (For Z18) MP07376 Engineered with improved components for better print performance Experience a seamless workflow from start of a print to completion , Nozzle Diameter:0.4 mm [0.015 in]. Backed by an extensive Quality Assurance (QA) operation and technical support team to ensure your success Based on our testing, it prints for over 700 hours; This number is the equivalent of the following: 7 large spools of MakerBot PLA filament 2,310 meters of filament 1.44 miles of filament