Our range of road brake cycle pads and blocks feature carrier designs that are compatible with all current brake systems as well as some of the less common older manufacturers calliper brakes. All the pads use non-abrasive compounds that will not damage wheel rims, as well as specialist compounds for performance braking surfaces such as carbon rims. Features: 52mm Replacement cartridges for Road pad carriers Complete absence of abrasive materials which damage rim Shimano and Campagnolo compatible