Notice: This hotend kit replacement is only compatible with for A1 Mini and A1 3D printer. Premium Nozzle Quality: It's made of a high-quality Chrome-plated brass heating block which ensures heat resistance, wear resistance, and corrosion resistance. Filament material: The print head for A1 Mini works with 1.75 mm PLA/ABS/PETG/TPU/Wood filament. Simple Installation: Remove the old hot end and install the new hotend to start. Please note:the physical slightly color difference or difference, please do not mind, does not affect the use, thank you! Colour:As Shown Material:Hard steel + silicone Package Contents: 1 set * hotend kit 2 * silicone sock Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.