Your referring to the female torx sockets right? I would pickup a whole set. They're cheap enough, and they weren't limited to use on the diff, other components on the TI have them. http://www.sears.com/sr/javasr/produ...seBVCookie=Yes The driveshaft nuts are 16mm, and I think the bolts holding the diff in the subframe are 19mm. At least that is what I remember, its been a few weeks since I had mine out. __________________ SOLD!!! 1999 332ti //M Sport Titanium Silver M3 S52 3.2 I-6 Engine, M3 Clutch w/ ti Getrag Trans, Z3 3.15 LSD medium case diff and half shafts, OEM Hatch Spoiler, Eurosport HP Underdrive Pulleys, FDM, 17" DS1 rims, M3 Front Struts & Springs, M3 Instrument Cluster, 3-spoke //M steering wheel with tri-color stitching, SSK, CCFL Angels in Depo projectors with 5k HIDs |