A set of 4 OEM quality 5x5.5 (5x139.7mm) 4" Wheel Spacers 9/16-18 Studss, enough to widen one axle 4" total (one spacer in the kit for each wheel on the axle).
Set of 4 OEM quality Black Wheel Spacers 3" (1.5 inch Per Side) fits all 5x5 (5x127) Hubcentric vehicle to 5x5 wheel patterns with 1/2 x 20 threads fits Jeep Wrangler JK Rubicon