The fsa orbit uf headset 1 18rdquo is a threadless headset that comes equipped with an upper cup that has caged ball bearings and a lower cups that has angular contact bearings the headset also has upper and lower water seals to ensure no water can leak in through the headset and damage your bike this fsa headset has a really light weight of 101g and is available in black a colour that will suit any bikes paint job features of the orbit uf headset 1 18in 1 18 caged ball bearings uppe