A1 mini nozzle quick replacement | precise extrusion | . for PLA- and PETG- consumables have been tested multiple times The smaller the size,the higher precision of model.0.2mm nozzle can endow the Da model with smaller layer Space and a delicate vertical printing ,making the printing model have high precision.Te smaller the size,the higher model resolution.0.2mm nozzle can squeeze out smaller diameter consumables,giving the printing model a high-resolution horizontal printing .tip:Don't use 02mm nozzle to print consumables containing metal or other inorganic particles,as it may cause blockage Comparison of different sizes of nozzles: 0.4mm nozzle is the standard nozzle diameter for modern 3D printers, which effectively balances printing quality and printing speed. The A1 series 3D printer adopts a 0.4mm nozzle size.can be printed using a 0.4mm hardened steel nozzle, which is not easily clogged and has good printing quality. It is recommended to use a 0.6mm hardened steel nozzle to print other consumables containing carbon or glass fibers, minimizing the risk of clogging and wear. Specifications: D-0.2/0.4/0.6/0.8mm nozzle Please note; the physical slightly color difference or difference, does not affect the use, please do not mind, thank you Material: Metal colour: Black 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.