Pricing mentioned is for EA. Requires a minimum buy of 1 piece. 3/8X1/4 MANDREL 3/4" HEAD/SHOULDER Diameter; Hazmat=False; Features=Fully reinforced and ideal for working in Hard-to-reach areas or in close quarters; StandardPack=1EA; CountryOfOrigin=DE; Arbor Diameter = 3/8 in; Speed=30000 rpm [Max];