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 15x816x8.2517x8.2517x9.2518x8.518x9.519x8.519x9.519x10.518 x 9.5 Bolt Patern 4x1004x100/4x114.35x1005x114.3Blank Offset +20mm+25mm+32mm+35mm+30mm