This new high quality special diamond disc with 60 grit mesh performs exceptionally in grinding thermal barrier coatings (TBC) and ceramic coatings for engines and turbines. Excellent removal of hard facings made of tungsten carbide, chromium carbide, titanium carbide as well as glass and composites. Extremely long lasting. This quick change disc attachment is male threaded that screws onto holder. Can be used wet or dry. Please email us for large volume discount pricing.