Home » 3″ Roll & Lock Zirconia Flap Disc 3″ Roll & Lock Zirconia Flap Disc Specifications Max RPM: 30,000 Roll Lock Material: Zirconium-Oxide Description 3" x 40 Grit 3" x 60 Grit 3" x 80 Grit 3" x 100 Grit 3" x 120 Grit Item Number TAR3401 TAR3602 TAR3803 TAR31004 TAR31205