Cane Creeks 40-Series sets the standard for performance, durability and value. Drawing from the premium 110-Series design, the 40-Series includes all the features necessary for a durable, lightweight, long-lasting headset. We make it easier, by developing consistent graphics, interchangeable parts and over 40 con?gurations to meet almost every size need. Sold in straight and tapered assemblies or tops & bottoms, tops are available in either short (9mm) or tall (15mm) stack height bearing covers