Features: By professional silicone substance, the brush head is soft and wear-resistant, effectively removing residues and impurities on the nozzle surfacing to make sure printing accuracy. Each cleaning can reduce the risk of clogging and increase the success rate of printing. Regularly cleaning the nozzle with this silicone brush can extend its service life by 150%, avoiding frequent replacement due to dirt accumulation. By friendly silicone substance, it is harmless, ensuring safety during use. Meanwhile, silicone is soft and will not scratch the nozzle or other sensitive components. Compared with metal brushes or hard-bristled brushes, silicone brushes do not scratch or wear the nozzles, are more gentle and effective, and avoid potential damage risks. Whether at home, in school or in a maker space, the nozzle brush can quickly and efficiently clean the equipment, helping users maintain a good printing condition. Specifications: Type: Printer Nozzle Brush Substance: Aluminum alloy + silicone Color: Black + grey Size: As shown in the picture Package Includes: 1 X Aluminum alloy cleaning brush 4 X Silicone brush note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.