1. Forged CNC machining shell, 7050 ultra-light aluminum alloy, anodized, laser marking, very fine workmanship 2. Two stainless steel sealed industrial bearings are used up and down, which are strong and durable, flexible in rotation, quiet and silent 3. Material: 7050 aluminum alloy 4. Specifications: suitable for 44mm inner diameter (outer diameter about 50mm) head tube frame + 28.6mm caliber front fork 5. Weight: about 120 grams
