Shimano dura ace 9000 outer brake casingbc 9000 outer casing for road bikes comes with a more solid construction developed to work with the shape of drop handle bars this more solid casing means it will not be deformed easily at the bends of the bars features silicone greased filled for reduced friction with no deforming of the outer casing this assures light action smother running and high durability of the inner cables for use with 16mm brakeinner wiresa 2 year warranty is offered with all