Tapered headsets are a combination of the other styles. Usually a tapered steerer tube will have a 1 or 1.5” lower diameter, and a 1 1/8” upper diameter. The headsets for these frames & forks can be any combination of traditional, internal, or integrated headsets. It is very important to accurately measure the inner diameter of the headtube top and bottom to narrow down the headset model needed. In some cases, Tapered headtubes can be used with a straight 1 1/8” steerer tube if a reducing headset race is used.
Internal headset (with cups) with angular contact bearings
Buy FSA Orbit 1.5 ZS Tapered Steerer from Chain Reaction Cycles, the worlds largest online bicyle store