- Hotend Kit for Elegoo Neptune 4 and 4 Pro: Designed exclusively for the ELEGOO Neptune 4 and Neptune 4 Pro, this assembled hotend kit is not compatible with Neptune 4 Plus and Neptune 4 Max models. - Enhanced Thermal Conductivity: The 0.4mm brass nozzle features an inner wall roughness of Ra0.4, minimizing blockage and ensuring superior thermal conductivity for consistent and stable printing performance. - Leak-Free Operation: The 45℃ chamfer design at the throat thread promotes smooth filament feeding, while the flat and smooth cross-sectional area of the pipe mouth ensures high compatibility with other components, preventing material leakage. - High-Temperature Resistance: Crafted from high-quality 6063 aluminum, the heat block withstands temperatures up to 300℃. Its durable surface finish (0.5) provides corrosion, water, and rust resistance, along with exceptional precision and thermal conductivity. - Practical Applications: Ideal for advanced printing tasks requiring high-temperature materials, precise detail work, or consistent layer adhesion. Use this hotend kit for projects including intricate designs, functional prototypes, or custom creations that demand reliable performance. Upgrade your printing experience with this robust and efficient hotend kit, specially engineered for the ELEGOO Neptune 4 and 4 Pro, guaranteeing unmatched reliability and performance.