... for making premium quality flap disc or polishing pads. fiberglass backing, backing pad Types and dimensions( ... According to ISO15635:2001):d±3 /mmH+0,16min mmF min, mm9516.035.54 ... put to wooden pallets orderly.Thickness: 2.4mm-3.5mm(Tolerance:±0.3mm)Inner diameter: 16.3mm ... ,140mm,170mm, 178mmApplications: Used as the backing pads of Flap Disc,Mop Disc and Flap Wheel.Shipment ...