RT-4-inch 4T Black

4-Inch 4T Black Metal-Bond Diamond Grinding Disc

Available in 16#, 30#, and 60# grits with a thickness of 12 mm. Designed for C25–C30 concrete floors, it is suitable for surface opening, coarse grinding, leveling, scratch removal, and preparation before resin polishing.

It is suitable for:

  • New concrete floors requiring surface opening and laitance removal
  • Old or worn concrete floors requiring renovation and surface reconditioning
  • Uneven concrete surfaces with minor high spots and level differences
  • Dry-shake hardener floors and standard industrial concrete floors
  • Factory floors, warehouses, garages, workshops, and parking areas
  • Surfaces requiring the removal of weak layers, dirt buildup, or thin coating residue
  • Concrete floors requiring preparation before densification, resin grinding, or polishing

Grit selection:

  • 16# — Aggressive surface opening, heavy grinding, and high-spot removal
  • 30# — General coarse grinding, leveling, and surface preparation
  • 60# — Scratch refinement and transition to resin-bond grinding tools

The four-segment design provides stable grinding and balanced contact with the floor, making it suitable for efficient preparation of C25–C30 concrete surfaces.

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