FSA Orbit Z Headset Bearing Type: Angular ContactCrown Race: 30.0Headset Detail Color: BlackHeadset Size: 1-1/8"Headset Type: Internal, 44.0mm OD cup, 1-1/8" (Zero Stack)Material: AluminumStack: 12.5mmStack Height: 14mmSteer Tube Size: 1-1/8" ThreadlessWeight: 78gWeight: 82g