* 40-Series Represents the Perfect Balance of Performance, Durability and Value* Tops and Bottoms Sold Separately As Part of Cane Creek’s Tapered Headset Solution* Sealed Black Oxide Steel Cartridge Bearing* Durable Steel Crown Race with Low-Friction Face-Seals* Consistent Stack Heights Across 10, 40 and 110-Series* Internal Parts Are Cross-Compatible Across 10, 40 and 110-Series