Pricing mentioned is for EA. Requires a minimum buy of 1 piece. Diameter=3 in; Arbor Diameter = 3/8 in; Speed=12100 rpm [Max]; Abrasive Material=Silicon Carbide; Roughness Grade=Fine; Mounting=Arbor Hole; Applications=Deburring, Polishing; Applicable Materials=Composites, Metals, Plastics; Color Code=Gray; Color=Gray;