Deda elementi rsx 02 seatpostdeda design offers an easy twin bolt adjustment 2014 light alloy 3d deep forged m6 seat clamp bolts features material alloy 2014 3d forged length 350mm diameter 272 and 31 6mm setback 21mm weight 285g 31 6mm compatible with deda adapter for di2 internal batterybuy deda elementi components from chain reaction cycles the worlds largest online bike store