120 Grit 3" 10 Seg Metal- Medium Bond Red

-Fine-grit metal-bond grinding disc for the last metal step — 120 grit sits at the end of the metal-bond progression, refining the scratch pattern left by coarser grits (16, 25/30, 50, 80) and preparing the slab for transitional and resin polishing pads. Removes the deeper score lines from earlier passes while leaving a uniform surface ready for the next polishing stage.

- 10-segment configuration for the 3" Redi-Lock platform — ten diamond segments arranged around a 3" / 80mm Redi-Lock or 2-pin compatible plate, designed to fit Husqvarna PG-series, STI/PrepMaster, Stonekor, and similar small-format grinders. The smaller disc format is sized for edge grinders and compact floor machines where the larger 7"–10" tooling won't fit.

- Engineered for medium concrete — medium-hardness concrete (typically 3,000–5,000 PSI, Mohs 5–6) is the most common slab type found on commercial and residential floors. The medium metal bond is balanced for this hardness to give steady cutting speed without premature wear or diamond glazing.

- Counterintuitive but correct: medium bond is the default starting point — most contractors start a new job here and switch to harder (for soft concrete) or softer (for hard concrete) bonds only if testing or visible wear shows the medium bond isn't matched to the floor. The red color code is the universal industry marker for medium-bond tooling.

- Final metal-bond step before resin polishing — at 120 grit, the scratch pattern is fine enough to transition directly into resin polishing pads (typically starting at 50 grit resin). A clean 120-grit metal pass is what makes the resin sequence go faster — any deeper scratches left here will show through the final polish. Best paired with a HEPA-vacuumed shroud for OSHA silica compliance during indoor work.