DeWalt DW8309 4-1/2" x 7/8" 80 Grit Zirconium Flap DiscPremium abrasive cloth provides up to 15x longer life than fiber discs.
Zirconia grit for 3X faster material removal than fiber resin discs.
Type 29 fiberglass backing provides optimum (10º-25º) grinding angle, allowing full use of the discs.
Won't mar work or splinter during use.
For use in grinding steel applications 80 Grit
7/8" diameter arbor
Max RPM at 13300