Fiber disc Size:100mm,115mm,125mm,150mm,180mm,230mm hole size:22.23mm grit:40# to 400# best quality Fiber discSize:100mm,115mm,125mm,150mm,180mm,230mmhole size:22.23mmgrit:40# to 400# Backing : Fiber paper as backing coating: closeIdea for removing ruse, paint, deburring ,polishing welding seam. It is mainly used for ship, automobile, aviation machinery ,bridge, building ,and etc . Size in ...