PCD - Piranha - Small Tooth - Left

- Aggressive PCD coating-removal tool for the heaviest prep jobs — PCD (polycrystalline diamond) tools are the industry's most effective answer for stripping heavy coatings, epoxy overlays, paint, glue, mastic, thin-set, urethane, and carpet adhesive from concrete. Unlike standard metal-bond grinding segments that wear diamond grit against the surface, PCD scraper teeth physically peel the coating off — much faster removal with substantially less concrete damage underneath.

- "Small tooth" configuration for thinner coatings and finer prep — the smaller PCD scraper inserts cut a narrower, shallower bite per pass than large-tooth PCDs. Ideal for thinner coatings (up to ~3mm), older paint, glue residue, flake flooring, and carpet remnants — situations where you want aggressive removal without gouging the slab. For thicker coatings or heavier urethane, the large-tooth Piranha removes material faster but leaves a deeper scratch pattern.

- "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.

- Polycrystalline diamond on tungsten carbide substrate — PCD teeth are made of synthetic diamond particles sintered together under high pressure and high temperature, then bonded to a tungsten carbide substrate that provides the structural strength. Many Piranha designs include a protective diamond strip behind the PCD teeth that lightly dresses the scratches and supports machine weight — extending tool life by allowing the PCD bite to stay shallow rather than digging in.

- Re-tippable for cost-effective operation — once the PCD teeth wear out, the substrate can be sent back to the manufacturer for re-tipping rather than being discarded. Over the tool's full life, this can cut per-job tooling cost meaningfully on contractors who run high coating-removal volume. Best paired with shrouded grinders + HEPA vacuums; PCD work generates large volumes of coating debris and concrete dust at high speed, making OSHA silica compliance (29 CFR 1926.1153) non-optional for indoor jobs.