General description This Hotend Head 0.4mm Hardened Steel Nozzle Hot End Kit is designed specifically for A1 Mini and A1 3D printers. It features a premium quality chrome-plated brass heating block that ensures excellent heat resistance, wear resistance, and corrosion resistance. Technical specifications Compatibility: A1 Mini and A1 3D printer Nozzle diameter: 0.4mm Filament materials: 1.75 mm PLA, ABS, PETG, TPU, Wood Material: Hard steel and silicone Measurement allowed error: +/- 1-3cm Installation Remove the old hot end Install the new hotend to start printing Usage This hotend kit is suitable for various filament materials, allowing for versatile printing options. Other information Package Contents: 1 set of hotend kit, 2 silicone socks Note: Light reflection and different displays may cause slight color differences in the item compared to the picture.