FSA Orbit Carbon Series Headset. Features: FSA's carbon top covers provide weight reduction and high end glamour Dual seal, angular contact bearings provide long lasting, smooth rolling performance Forged and CNC machined 6061 T6 alloy cups IS: 36x45 degree Cane Creek Integrated, CF, C-33: 45x45 degree Campagnolo Integrated, or ZS: ZeroStack shallow available for 1-1/8" and tapered applications For clarification go to http://www.fsaeasyheadset.com Specs: Model:Orbit C-33 S H I S:IS42/28.6|IS47/33 Stack:8mm/1mm Color:carbon Weight:66g