The Chris King InSet 1 headset fit frames that have a straight, non-tapered 44mm Inner Diameter headtube that requires 44mm Outer Diameter pressfit cups. This might sound confusing, but when thought through it works like this: the inner diameter of the headtube (44mm) must match the outer diameter of the pressfit cup (44mm).
The InSet 1 includes 44mm O.D. upper and lower cups, Griplock cap (which fits on top of the upper cup), a standard stem cap and an 1 1/8" baseplate. The perfect tolerances combined with super high quality bearings make this headset function with surgical precision and rock solid durability. After all these years, this is what we have come to expect from a Chris King product. Availible in high polish black-on-black Sotto Voce graphics.
The InSet 1 headset is designed to work with frames that feature straight, non-tapered headtubes that have a 44mm inner diameter.