4 Wheel Adapters 5x4.5 to 5x5 1.25"(32mm) - Adapts Jeep Jk Wheels on Tj Yj Kk Sj Xj Mj (Set of 4) Adapts Jeep JK Wheels on TJ YJ KK SJ XJ MJ Solid forged 6061 T6 aerospace grade anodized aluminum 10.9 Grade A hardened studs Centerbore: 71.5mm. Spacer Thickness: 32mm (1.25 inch) Stud/Nut Thread Pitch: 1/2" Next business day shipping!