Origin-8&';s SSR Threadless Headset is for 1 1/8-inch threadless forks. It features CNC machined 7075-aluminum cups and stainless-steel cartridge bearings for excellent performance and long life. It also comes in many colors to customize your ride.- 93g including star nut and laser top cap- Stack Height: 28.5mm**Anodized colors will vary from batch to batch and may not match exactly