Be used with the polishing machine sanding pad easily by the Velcro of sponge pad.Show a good program and long life.Suitable for car body polishing and compounding. Art.NO                    Specification Y801AA/A/B/C/D/E/F            8.5 Inch (concave shape) Y806AA/A/B/C/D/E/F            8 Inch (wavy shape) Y807AA/A/B/C/D/E/F            6 Inch (plane shap) Y805AA/A/B/C/D/E/F            8 Inch (Saucers shape)Y808AA/A/B/C/D/E/F     6 Inch(Saucers&wavy shape)