Item Description22.2mm hollow pipe billet spindle5mm deep spline fits crank models 7700/7703, 6500/6503, 5500/5502/5503/5505: 250g/259gAlso a substitute for discontinued Ultegra 6500/6503 OL5 bottom bracketsItem Specificationscrank: tripleinterface: OL5thread: Englishshell: 68mmlength: 118.5mm: