7" Cup Wheel, Lightning, Medium Bond 30 Grit

- Aggressive metal-bond diamond cup wheel for 7" hand grinders — designed for fast stock removal on concrete and masonry. The 30-grit metal-bonded diamonds tear through epoxy, paint, glue, mastic, and surface deformities efficiently, making this a go-to choice for coating removal and slab prep before refinement.

- Lightning segment geometry for aggressive cut with debris clearance — the lightning-bolt-shaped segments combine multiple angled leading edges (similar to arrow segments) with curved relief channels (similar to S-shape), creating a wheel that bites aggressively into the material while continuously clearing debris from the cutting zone. The zigzag profile concentrates cutting pressure at the leading points while the relief channels prevent loading on softer coatings like epoxy and mastic.

- Medium bond for the most common concrete hardness — medium bond is balanced for typical commercial and residential slabs (3,000–5,000 PSI, Mohs 5–6) — the default choice when slab hardness is unknown. On much softer concrete, the medium bond will wear out faster; on much harder concrete, it may glaze and lose cutting action. Run a Mohs scratch test if slab hardness is in question.

- 5/8"-11 threaded arbor for direct grinder mounting — fits any 7" hand grinder with a 5/8"-11 threaded spindle, no flange or backing pad required. Always verify the wheel's stamped maximum RPM against your grinder's rated speed before use. Suitable for wet or dry grinding, though dust shrouds plus HEPA vacuum are required for indoor work under OSHA silica standard 29 CFR 1926.1153.

- Specialist tool for mixed-material coating removal — choose lightning-segment when the job involves a mix of hard concrete and softer coatings (epoxy + concrete, glue + concrete, multi-layer paint over concrete). The aggressive leading edges cut hard material while the channels prevent clogging on soft material. Choose double-row for general stock removal, arrow for pure coating jobs, or S-shape when smoother scratch patterns matter more than cut speed.