The FSA Orbit ZS Integrated Headset. Cane Creek compatible internal headset. Shallow alloy cups fit into 50mm OD headtube. Very low profile designed primarily for ATBs. Patented alignment tip for increased durability and performance. TH brand 36/45 degree micro angular contact bearings (blue seal). 7075 aluminium crown race and aluminium top cap. Stack Height 8.4+5.6=14. Weight 80grams. Black.