25H Grit DOT Segment Black for Soft Concrete

- Aggressive metal-bond diamond segment for the first grinding step — the 25-grit cutting surface opens up the concrete, removes coatings, exposes aggregate, and creates the profile needed for subsequent polishing or coating application. Fits any walk-behind grinder using the Lavina-style "dot" segment pattern (three 9mm mounting holes).

- Engineered specifically for soft concrete — soft concrete (typically under 2,500 PSI, Mohs 2–3) is highly abrasive and wears diamonds out fast. The hard metal bond (the "H" in 25H) holds the diamonds in place longer, giving you usable tool life on a slab that would chew through a softer-bond segment in a fraction of the time.

- Counterintuitive but correct: hard bond on soft concrete, soft bond on hard concrete — using the wrong bond for the floor causes either premature wear (soft bond on soft floor) or diamond glazing where the tool slides without cutting (hard bond on hard floor). Run a Mohs scratch test before committing to a bond if you're unsure of the slab's hardness.

- Color-coded by manufacturer for quick identification — the black designation is Simiron's color code for this soft-concrete bond. Most contractors keep three-color sets on the truck (one bond per concrete hardness category) so the right segment can be selected on-site once the slab is tested.

- First step in a typical grind-and-polish sequence — after the 25-grit metal opens the floor, the progression moves up through finer metal grits (50, 100), then into transitional and resin polishing pads. A clean cut at 25 grit is what makes every step afterward faster — leave scratches here and you chase them all the way to the final pad.