Package include : (1 wrench, 3 inner nuts, 3 outer nuts) Replacement part numbers: 224399-1, 193465-4, 224568-4 parts Fit for Makita 9005BZ 9015B 9505BH 9527PB 9527NB 9015DB 9561CV 9016B 9049 9067L 9077SL 9564,GA7021, GA9040S 9" 15A, GA5010Z 10.5A 5", 9557NB, 9558PB, GA6020, 9005B, 9503BH, 9524NB, 9528PB, 9528NB 9" 15A Angle Grinder, etc FIT for ：193465-4 Bosch Black & Decker Ryobi ,9029, 9069, 9016DB, 9047L, 9558NB, 9557PB, GA5020 10.5A 5" SJS, 9565PC 5" SJS, 9554NB, 9015A, etc 3.Made of high quality hard carbon steel, stronger, more durable and wear resistant. Outer Nut Size: 5/8"-11, fits all 4-1/2", 5" and 7" grinders with 5/8"-11 threaded shaft (does not fit Milwaukee 4-1/2' ') Made of high quality hard carbon steel, stronger, more durable and wear resistant. The heat dissipation is good, which is beneficial to prolong the service life