Anchor Brand General Purpose Back-up Pad, 4-1/2 in x 5/8 in -11, 12000 RPM

General Purpose Back-up Pad, 4-1/2 in x 5/8 in -11, 12000 RPM. Made from proprietary thermoplastic. Ideal for general purpose applications using resin fiber discs. Premium quality product with durable construction. Attributes: Arbor Diam [Nom] = 5/8 in, Dia. [Nom] = 4-1/2 in, Grit = Medium, Hardness Grade = Medium, Height [Nom] = 1 in, Length [Nom] = 4-1/2 in, Speed [Max] = 12000 RPM, Thread - TPI or Pitch = 5/8 in - 11, Width [Nom] = 4-1/2 in, Wt. = .216 lbs. (10 EACH = 1 BOX)