FSA NO.42/ACB-A Orbit C-40 Integrated 1-1/8Inches to 1.5Inches ID 42/52 mm Tapered Headset, Red, XTE15121-1/8in, 45 degrees/ 45 degrees ACB UppeUpper Headtube I.D. 42mmAlloy top coverOEM package (This item is exactly as pictured and does not include retail package)Content: 1 set/pack