Team Z Motorsports offers Multi Pattern Aluminum Wheel Spacers 4-1/4" / 4-1/2" / 4-3/4" for 1/2" Wheel Studs. These spacers come in either 0.125" or 0.250" Thickness, and sold in pairs. The overall diameter is 6-1/4" with an internal bore diameter of 3-1/8". These spacers are constructed of 6061 Aluminum, and are CNC Laser Cut in house.