•Durable polyurethane foam, plastic backing made of 70% +/-10% glass fiber + 30% +/-10% epoxy resin, blue vinyl face for sanding disc attachment
•For use with PSA (sticky) backed discs.
•5/16-24 male thread.
•Medium density.
•Tapered edge.
•Stocked & shipped from the US.
(California Prop 65)