https://all4bikes.be/shop/images/fsa/fsa-balhoofd-orbit-ce-wit-8mm-1-18---121-0406.jpg
Headset, FSA 121-0406 Orbit CE
threadless, 1 1/8 diameter steerer tube, angular contact bearings, road, 42.0mm diameter, 30.0mm race, top cover 7.8mm, 9.6mm stack height, aluminum, white, 75g, Campagnolo compatible