abrasive brushes - aluminium oxide Matting brushes made of alumina with round grain for fine satining and matting of metals. Also suitable for freshening, cleaning old metals, as well as for processing after pickling. Products nameVersiongrain sizedimensionsitem No.flap wheelAluminium oxide280 (fine)100 x 30 mm507071flap wheelAluminium oxide180 (medium)100 x 30 mm507070flap wheelAluminium oxide100 (coarse)100 x 30 mm507069