Micro Swiss FlowTech™ – Brass-Plated Nozzle, 1.75 mm, 0.3 mm The FlowTech nozzle is leakproof and allows for effortless and fast nozzle replacements. The FlowTech design seamlessly integrates the thermal tube into the nozzle, effectively solving the most common problems encountered with traditional hotends: nozzle leaks and inconvenient nozzle replacements. Features of Micro Swiss FlowTech™ Brass-Plated Nozzles