2 PC 1/4 INCH WHEELS SPACER FIT Ford F250 F350 8X170MM 2 pieces 1/4" INCH 8 Lug Universal Wheel Spacers Fit 8-lug metric: 165.1mm,170mm Fit 8-lug standard(inch): 6.5", 6.69" Center bore: 	5.00" Overall Diameter: 	8.13"