1 Inch Threaded REF#: 173443 Lowrider Threaded Steel Headset 22.2x32.5x27mm Chrome. Lowrider Steerer OD: 1 Inch (25.4mm)Cup: 32.5mmSize: 1 Inch (22.2mm)Race: 27Material: SteelStyle: BmxColor: ChromeType: ThreadedBrand: Lowrider Sign In to view pricing and availability