3M Green Corps? Flexible Grinding Wheel, Quick Change, 4-1/2 Inches Dia, 1/8 Inches Thick, 36 Grit , Ceramic – 40 per CA – 7000118597

Abrasive Material=Ceramic. 40 per CA Abrasive Trade Name=Cubitron?. Arbor Diam [Nom]=5/8 in. Arbor Thread - TPI or Pitch=5/8 in to 11. Dia. [Nom]=4-1/2 in. Grit=36. Speed [Max]=13. 300 rpm. Thickness [Nom]=1/8 in. Tool Shape=Type 27. Wt.=0.25 lb..