The FSA Orbit ZS-3 headset is compatible with Cane Creek style internal headsets and features a shallow cup. Features and Information Cane Creek Compatible 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 alloy crown race Laser etched aluminum top cap 1 1/8" size steerer tube Stack Height - 9. 8 + 3. 3 = 13. 1mm Black anodized finish Weight - 82 grams (1 1/8") Item Specifications Color Black Crown Race 30. 0 Stack Height 13. 1 mm Bearing Type Angular Contact Headset Type Internal, 44. 0mm OD cup, 1-1/8" (Zero Stack) Weight 82 g Material Alloy Steerer Tube 1-1/8" Threadless | Fsa | Orbit Zs-3 Internal Headset Blk, 11/8", 44. 0 Od, Zero Stack