This is a semi-circular retractable brush with natural wool, soft feel, moderate softness and hardness, retractable design, ultra-wide brush surface. It is especially suitable for dust removal brushes of various digital products, such as screen brushes, keyboard brushes, etc. It can also be used for cleaning brushes of some instruments and meters. The cleaning effect of natural wool is incomparable with other plastic brushes. The material is high-grade transparent ABS material. It is comfortable to handle, flexible and convenient to use, beautiful and elegant. It is a good helper for dust removal.