... . Therefore, it is a product with multifunction of energy-saving, safety, environmental protection, aesthetics.products size :Specification: Bottom width: 2.2 mm ... animals or plants Brush material: PA,PBT,PP,PE,PET,PVC Brass ,steel wire,animal woolBrush diameter: 0.08 mm to ... shapes Brush functions: antiflaming, static prevention, UV and negative ion protection. door airproof brush