a kind of backing for making flap disc,fiberglass backing,fiberglass backing plate,backing pad,polishing pad backing Types and dimensions( ... 23454,6Product description:Type:T27(Flat) ,T29(Convex)Material: Fiberglass fabric impregnated with phenolic resinWasher: 1 or 2 or ... .Shipment: by 20 feet ocean container.key words:fiberglass backing,fiberglass backing plate,backing pad,polishing pad backing ...