FSA Orbit IS headsets.Cane Creek compatible integrated style bearings fit directly into headtubeItem SpecificationsColorCarbonWeight62gMaterialCarbonSteerer Tube1-1/8" ThreadlessCrown Race30.0Stack Height17mmBearing TypeAngular ContactHeadset TypeIntegrated, 41.0mm OD, 45 degree bearing (IS)Defined ColorBlackS.H.I.S UpperIS41S.H.I.S LowerIS41S.H.I.S. Clamp Diameter28.6