Dip Slack 18 Black Machined Wheel / Rim 5x4.25 & 5x4.5 with a 40mm Offset and a 72.62 Hub Bore. Partnumber D66-8714M Speed your way to style and performance with this Wheels Each wheel comes with a center cap Ultimate blend of strength and weight savingsSpecifications Style Number - Slack D66 Diameter - 18 in.