#91821 contents: qty 1 Anti-Roll Bar Collar qty 4 Anti-Roll Bar Pivots (Metric) qty 7 Set Screws [M3x0.5x3mm] qty 2 Set Screws [M3x0.5x10] qty 2 Screws, M2.5x0.45x6mm BHCS qty 1 Front Anti-Roll Bar Collar, B6 qty 1 Set Screw [M3x0.5x2.5mm] The hardware packs #71134 and #91821 do not include the ball cups. Purchase them here: #91820.