16 Yellow Double Segment Extremely Hard Concrete

- Most aggressive metal-bond grinding segment in the standard line — 16 grit is the coarsest standard size, designed to tear through thick coatings, heavy mastic, epoxy overlays, glue, and badly worn or contaminated concrete surfaces in a single aggressive pass.

- Double-segment configuration for tool life and refinement — two diamond segments per shoe create more surface contact than a single segment, extending tool life and leaving a more uniform scratch pattern. Best paired with larger / heavier walk-behind grinders (25" and up) where the extra contact patch helps the machine pull weight. For aggressive stock removal on smaller machines, a single-segment 16 grit cuts faster but wears out sooner.

- Engineered for extremely hard concrete — extremely hard concrete (typically 7,000+ PSI, Mohs 8–9) includes power-troweled commercial slabs, high-performance industrial floors, and densified surfaces that defeat standard bonds entirely. The yellow color code designates the softest metal bond available, engineered to wear away aggressively so fresh diamond is continuously exposed even on slabs that would glaze every other bond.

- The last-resort bond when other tools have already glazed — yellow sits at the bottom of the bond-hardness scale: orange (very soft concrete) → black (soft) → red (medium) → blue (hard) → gold (very hard) → yellow (extremely hard). If gold tooling is glazing on a hard slab, yellow is the next escalation. If yellow glazes too, the alternative is reducing machine weight, slowing RPM, adding water mist, or applying silica sand to reopen the diamonds — or stepping up to specialized Cap Cutter tooling.

- Step-zero tool for the hardest commercial slabs — use this before stepping up to 25- or 30-grit when the floor combines thick coatings, surface damage, or major profile correction needs with extremely hard concrete underneath. After the 16-grit opens the floor, the typical sequence moves up through 25/30, 50, 80, and 100-grit metals — continuing in the yellow bond throughout the sequence to avoid bond mismatches mid-job. Best paired with shrouded grinders + HEPA vacuums for OSHA silica compliance (29 CFR 1926.1153) during indoor work.