InSet 5 is built for riders using a 1.5" tapered fork that needs the precision of a Chris King headset on their bike with a 49mm headtube. InSet 5 is equipped with exclusive in-house built bearings and patented GripLock system to keep your steering precise and dependable.InSet 5 has 49mm upper internal cup, 49mm lower external cup with 1.5" baseplateEngineered, manufactured and assembled in Portland, Oregon USADesigned specifically for a 49mm straight headtube and a 1-1/8 to 1.5 tapered steerer tubeItem SpecificationsBearing TypeCartridgeColorMatte JadeCrown Race40Defined ColorGreenLower Stack Height14.2S.H.I.S LowerEC49S.H.I.S UpperZS49S.H.I.S. Stem Clamp Diameter28.6 ThreadlessUpper Stack Height8Weight150 Chris King InSet 5 Headset Headsets UPC: 841529274530