Product Overview Part Number * SPIR-H700-RStandard Pack - 1 EASC H700-R BACKING PADS Features: Standard air-cooled all-purpose | Ideal for sanding operations on metal, plastic, fiberglass, etc.Dia. : 7 in Face Type : Spiral Hardness Grade : Rigid Speed [Max] : 8,500 rpm Thread - TPI or Pitch : 5/8 in - 11 Wt. : 0.29 lb