Store › 3'' Polishing / Compound Foam Image 1 of 2 Image 2 of 2 3'' Polishing / Compound Foam £3.59 Velcro backed Polishing / Compound foam.Black - Polishing.Peach - Compounding/Cutting.Size - 75mm (3’’). Type: Polishing Compounding Add to Cart Added! Velcro backed Polishing / Compound foam.Black - Polishing.Peach - Compounding/Cutting.Size - 75mm (3’’).