PCD 2 Segment with Wear Bar – Left

- Less-aggressive PCD coating-removal tool with fewer cutting points — Lavina-platform PCD tool with two polycrystalline diamond segments paired with a sacrificial wear bar (also called a trailing diamond strip). The wear bar fundamentally changes the PCD's behavior: it stabilizes the segment, acts as a depth guide, and prevents the PCDs from biting too deeply into the concrete underneath. Best for thinner coatings, mastics, glues, paints, and failing epoxy coatings up to 30 mils thick.

- 2-segment configuration concentrates cutting pressure on each tooth — fewer segments means more pressure per PCD, which speeds the cut on harder or more stubborn coatings — but also accelerates wear on the segments themselves. The 2-segment + wear bar layout is the right pick when the coating is tough enough to resist a 3-segment cut but the slab underneath still needs protecting. Trade-off: shorter tool life than the 3-segment version at comparable pricing.

- "Left" = counter-clockwise rotation — direction matters — PCD scraper teeth are direction-locked: the cutting edge is angled to bite during rotation in one specific direction only. Left-rotation tools are for grinders that spin counter-clockwise (viewed from above). Critical rule for planetary / rotary grinders with counter-rotating heads: order half left and half right to balance the machine. Running all same-direction PCDs on a counter-rotating machine causes severe walking, unbalanced cut, and accelerated tool wear.

- The right tool when "protect the slab" matters more than "remove fast" — for thick coatings, urethane, or coatings with silica-sand broadcast mixed in, PCDs without a wear bar are the faster choice — but they leave deep gouges. For surface prep where the underlying concrete will be re-coated (or stained, or polished) and contractors don't want to grind through extra steps to clean up scratches, the wear-bar version saves time downstream by leaving a cleaner profile in the first place.

- Standard Lavina QC mounting, 30-mil coating ceiling, follow-up grinding still required — fits Lavina, Onfloor, Edco Magnatrap, and other Lavina-pattern grinders directly. Coating thickness limit: 30 mils (above that, the wear bar can't keep up with the cut and the tool loads up). Recommended RPM: 550–650 for electric grinders. Even with the wear bar, plan a follow-up metal-bond grinding pass (typically 25 or 30 grit) before coating, staining, or polishing — the wear bar reduces gouging, not eliminates it. Best paired with shrouded grinders + HEPA vacuums for OSHA silica compliance (29 CFR 1926.1153).