The hub is used with color-coded extra hard, hard, medium, and soft backup plates. Hub is used with color-coded. Use with 7 in face plates.

Attributes:

Applications = Deburring; Finishing; Polishing; Surface Preparation, Arbor Thread - TPI or Pitch = 5/8 in - 11, Color = Black, Dia. [Nom] = 4 1/2 in, Hardness Grade = Hard, Quantity = 1 per Pack, Thread - TPI or Pitch = 5/8 in - 11, Type = Backing Pad, Used With = Disc Sander; Right Angle Grinder, Wt. = 0.41 lb. (1 EACH = 1 EACH)