Swissstop offers the best braking performance in all conditions for all types of bike bxp is the latest aluminium rim compound non sticky predictible linear feel provides improved modulation power and braking in all conditions key features top performance on dry rims and even better performance on wet for use with alloy rims complete absence of abrasive materials which damage rims consistent braking 20c to 40c silent operation fits shimano dura aceultegra105 sram and