These Spacers are made to adapt 5x4.5 vehicle bolt patterns to Wheels that have a 5x4.5 b olt pattern. For 1987-1995 1997-2006 Jeep Wrangler. Thread Size: 1/2" x 20 Studs. 2 Pcs Wheel Spacers Adapters. Wheel Spacers Adapters 5x4.5 to 5x4.5 1/2"x20 Studs For Jeep Wrangler