Milwaukee Bicycle Co Sealed Bearing Tapered Steerer Headset<p></p><li>Includes star nut and top cap</li><li>Steerer Tube: 1-1/8"-1.5" Threadless</li><li>Headset Type: 1-1/8" Standard Upper - 1.5 (44mm) Lower Cups</li><li>Crown Race: 39.8</li><li>Stack Height: 28.50 mm</li><li>Bearing Type: Cartridge</li><li>Material: 7075 Aluminum</li><li>Weight: 132.0 g (Complete headset w/starnut and top cap)</li>