The Chris King InSet 7 combines seamless design and quality in a 44mm headset with an external lower cup that is a precision headset option for your 1.5" tapered steerer fork. the InSet 7 is equipped with exclusive built-in-house bearings and patented GripLock system for precise fit and function. - InSet 7 has 44mm upper internal cup, 44mm lower external cup, 1.5" Baseplate - Engineered, manufactured and assembled in Portland, Oregon USA - Designed specifically for a 44mm straight headtube and a 1-1/8" to 1.5" tapered steerer tube SPECIFICATIONS - Crown Race: 40 - S.H.I.S. Stem Clamp Diameter: 28.6 Threadless - Bearing Type: Cartridge - S.H.I.S Lower: EC44 - S.H.I.S Upper: ZS44 - Lower Stack Height: 14 - Weight: 160g - Upper Stack Height: 8.2