Specifications: 1) Thickness: 2" / 50mm 2) Vehicle Bolt Pattern(PCD): 5x4.5" / 5x114.3mm 3) Wheel Bolt Pattern(PCD): 5x4.5" / 5x114.3mm 4) Hub Diameter: 82.5mm / 3.25" 5) Thread Size: 1/2"x20 Note:Please make sure you take the proper neasurements gefore purchasing Package include: 4Pcs Wheel Spacers Adapters What should I pay attention to during installation? 1) Check to make sure that the wheel spacer fits perfectly with the hub/axle stub and the inner mounting surface of the wheel. 2) Make sure that the wheel bolts being used are of the appropriate length, not too long or too short. .