40 Series EC34 HeadsetDescription The 40 Series is the workhorse of Cane Creek's headset line up. Representing the balance of performance, durability and value, the series incorporates all the features necessary for a robust, lightweight, long lasting headset. External cups press into head tube. Sealed black oxide bearings Carbon friendy compression ring captured in top cover, keeping shims in place Steel crown race with integrated seals Interlok spacer compatible