Gear Alloy Overdrive 20 Satin Black Wheel / Rim 6x5.5 with a 18mm Offset and a 108 Hub Bore. Partnumber 728B-2908418 Satin Black Gear Alloy 728B OVERDRIVE wheels/rims 20"X9 Get away from the 'stock look' with these 20" custom Gear Alloy aftermarket wheels to enhance your vehicles ride. Buy with confidence from Hubcap, Tire & Wheel who have been in business for almost 30 years.