This kit will drop your transfer case 1" for improved driveline angles after lifting your XJ. Includes two rectangular aluminum spacer blocks and new bolts. The rectangular blocks come powder coated or anodized black for an attractive and durable finish. Most other manufacturers send you their drop kit in unfinished aluminum which is unprotected from corrosion. Also, most people do not want to draw attention to their transfer case drop. The black finish blends well with the black factory crossmember "hiding" the drop kit.