inside the DB2 series alloy suspension crossways mounted tube outer sections 55083, there is an antiroll bar 55089, 2 trailing link shafts 55084, 2 needle roller bearings 113414, 2 ball race bearings 119115 & a circlip 113429, the trailing link shaft ball race bearings are held to the shaft by a castle nut 55085, this is the tool needed for undoing the castle nut.