Shimano SLR Brake Housing Outer Easy-to-use pack containing a 40 metre roll of SLR road brake cable outer SLR 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 With no deforming of the outer casing this assures light action, smother running and high durability of the inner cables For use with 1.6 mm brake inner wires