1-main material:PVA,PVC ,PP,PU hard PVC pipe,stainless steel/titanium shaft 2-features:PVA economical,PVC,PP 3-OEM Surface roller polishing brush: 1.main material:PVA,PVC ,PP,PU hard PVC pipe,stainless steel/titanium shaft2.features:PVA economical,PVC,PP good corrosion resistance ,PU abrasion resistance3.uses:PU abrasion resistance absorbent sponge rollers,PCB industr ,CCL industry,LCD industry, ...