... Screw. Single aspect not only improved the brush of planthair form the sparse phenomenon, avoids the wool, brush come out . Makeproducts achieve ... , for polishing, etc.Material of the base: Stainless steel, electrolytic plate, galvanized plate and low carbon steel plate. Materials for brushes: ... of materials: For PA, PBT, PE, PP and PVC the maximum diameter is 1.2mm; for copper and steel wire the ...