Premium Orbit 1.5-ZS Lower, ZS56/40 36x45 NLS

- FSA's flagship headsets in separate upper and lower headset cup assemblies\n- FSA Integrated 41.2mm ID (36x45), Campy Hiddenset 42.0mm ID (45x45) , ZS (ZeroStack), or EC (traditional External Cup) available for 1-1/8" and tapered steerers\n- For clarification go to http://www.fsaeasyheadset.com