JNC wheels are a low pressure cast wheels. Low pressure casting uses positive pressure to move the molten aluminum into the mold quicker and achieve a finished product that has improved mechanical properties (more dense) over a gravity cast wheel. Low-pressure casting has a slightly higher production cost over gravity casting. Low pressure is the most common process approved for aluminum wheels sold to the O.E.M. market. Low-pressure cast wheels offer a good value for the aftermarket as well. Center Bore 73.1MM Lip Size 2-4 Inch Size 18x8 18x9 19x8.519x9.519x10.5 20x8.5 20x9.5 Bolt Patern 5x114.35X114.3 Offset +35mm+40mm+25mm