45/45 degree hybrid angular contact cartridge bearings, 30.0mm crown race ID Includes top cap and star fangled nut Each top cap is engraved with 1 of 3 random slogans to keep you motivated Integrated System drop-in headset to fit frames with Campagnolo-type 41.8mm ID headtube IS42/28.6|IS42/30 Black 66g 28.6 41.8 30 9 45?/45? 1-1/8`UPC/EAN/GTIN: 630950900992