FSA STEEL HEADSET CARTRIDGE BEARING 1" - Conventional threadless headset with forged 1.2mm thin steel cups. Patented alignment tip for increased durability and performance. TH brand micro angular contact bearings (red seal), order part no. 160-6485 x 2 to replace. Stack height: 12.9+12.1=25. Colour: Black. Size: 1". Weight: 138gm.