Used as the backing pads of Flap Disc,Mop Disc and Flap Wheel. Product description:Type:T27(Flat) ,T29(Convex)Material: Fiberglass fabric ... ,170mm, 178mmApplications: Used as the backing pads of Flap Disc,Mop Disc and Flap Wheel.Shipment: by 20 feet ocean container, 380,000 ... boxes directly into container without pallets. Fiberglass Net Backing Plate / flap disc