New driveshaft to differential bolt kit for use with new style flanges on the R180 differential. The newer style 13010 U-joint flanges are a little thicker than the original Nissan flanges and require a longer bolt to connect the driveshaft to the diff. If you get one of our new driveshafts it will require these longer than stock bolts. These are 8mm bolts for R180 rear ends. Choose from class 10.9 flange bolts or ARP racing bolts.