... delivery time: 15days product name:professional brush safety brushes escalator spare parts products detail Elevator brushes:Single, double row, three row, ... , etc.Material of the base: Stainless steel, electrolytic plate, galvanized plate and low carbon steel plate. Materials for brushes: PA, PBT ... PVC the maximum diameter is 1.2mm; for copper and steel wire the maximum diameter is 0.5mm; and for ...