16 Gold Double Segment Very 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 very hard concrete — very hard concrete (typically 6,000+ PSI, Mohs 7–8) includes power-troweled commercial slabs and high-performance industrial floors that defeat standard bonds. The gold color code designates an extra-soft metal bond, engineered to wear away faster on purpose so fresh diamond is continuously exposed even on slabs that would glaze every standard bond.

- Counterintuitive but correct: soft bond on hard concrete, hard bond on soft concrete — using a hard bond on a very hard slab causes glazing, where the diamonds polish smooth and stop cutting entirely. Gold sits one step beyond blue in softness: use blue for hard concrete, step up to gold when the slab is exceptionally hard, power-troweled, or showing glazing with a blue bond. If gold still glazes, the next escalation is yellow (extremely hard concrete, Mohs 8–9) or reducing machine weight, slowing RPM, adding water mist, or applying silica sand to reopen the diamonds.

- Step-zero tool for heavy prep jobs on very hard slabs — use this before stepping up to 25- or 30-grit when the floor has thick coatings, severe surface damage, or major profile correction needs combined with very hard concrete underneath. After the 16-grit opens the floor, the typical sequence moves up through 25/30, 50, 80, and 100-grit metals — typically continuing in the gold bond on very hard concrete to avoid bond mismatches mid-sequence. Leaving deep scratches at this stage is fine — the next grits are designed to remove them.