CLS SEATPOST Cls Seatpost CLS ZERO OFFSET SEATPOST Post Dia Length Offset Bolts Material Weight 27.2/30.9/31.6mm 400mm 0mm Stainless Steel AL6061 289g(L400mm,dia31.6mm) CLS OFFSET SEATPOST Post Dia 27.2/31.6mm Length 350mm Offset 10mm Bolts Stainless Steel Material AL6061 Weight 285g(L350mm,dia27.2mm)