The magnetic block on the A1mini hotend heating component can quickly and accurately fix the nozzle to the installation position, making disassembly and assembly of the nozzle simple and convenient. *Replacement, make sure the hotend has cooled down and avoid touching the heating block at the bottom of the hotend to avoid burns. The smaller the size, the higher the accuracy of the model. The 0.2mm nozzle can create models with smaller layer gaps and a delicate vertical printing surface, giving the printing model high precision. The smaller the size, the higher the resolution of the model. The 0.2mm nozzle can extrude consumables with a larger diameter, giving the printing model a horizontal printing surface with high resolution. Comparison of different nozzle sizes: The 0.4mm nozzle is the standard nozzle diameter used in modern 3D printers, which effectively balances printing quality and printing speed. The Tuozhu A1 series of 3D printers uses a 0.4mm nozzle size; friendly reminder: Do not use the 0.2mm nozzle to print consumables containing fiber, fiberglass, metal or other inorganic particles, as this may cause blockage. PLA and PETG consumables have been tested many times and can be printed with a 0.4mm hardened steel nozzle, which is not easy to clog and has good printing quality. It is recommended to use a 0.6mm hardened steel nozzle to print other consumables containing fiberglass or glass, which minimizes the risk of blockage and wear. Color: Black Material: Hardened steel Package Contents: 1 x Hotend kit 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 to be slightly different from the real color. The allowed measurement error is +/- 1-3 cm. Christmas decorations for party Rattan Rattan DIY Garland Christmas decoration Garland XMAS Party Pearl string Ornaments