The swissstop racepro 2011 black prince brake blocks provide unbeatable braking in both wet and dry conditions designed to not damage your carbon rims the blocks offer silent operation providing consistent braking from 20c to 40c they give fantastic power and modulation lm features swissstop racepro 2011 black prince brake blocks provide unbeatable braking in all conditions wont damage your rims for use with carbon rims consistent braking from 20c to 40c fantastic powe