Makita Abrasive Discs - Superior Stock removal. Specially formulated resin bond coat. Great for metal and wood. 4-1/2-Inch diameter, 7/8-Inch arbor hole.. 80 Grit, 5 Discs per Package. For use with model 9524NB, 9527NB, 9527PB, 9554NB, 9557NB/PB, 9564CV.