Flap Brushes – Ideal for use on Steel, Cast Iron, Stainless Steel high alloys, Aluminium and non ferrous materials. Non Woven Satin Finish Flap Brushes. Ideal for applying decorative satin finishes. Producing fine scratch pattens prior to cotton buffing / compound polishing. Silicon carbide flapbrushes are available on request to produce a brighter finish on stainless steel and harder materials.