The 4" Beast Pro Spike Grinding Disc is built for high-impact surface prep in concrete, masonry, and stone applications. Featuring aggressive diamond-clustered spikes on a steel backing, it efficiently strips away coatings like thin-set, epoxy, mastic, and mesh without clogging or excessive chipping. Its 5/8" 11 threaded arbor allows quick attachment to standard grinders, and it's suitable for both wet and dry use.