The abus 5510c numero combination cable lock the 5510c numero has the same combination locking mechanism as its bigger brother the 6415c tresor but with a 10mm thick 180cm long coil cable to provide a budget conscious lock option the new innovative snap cage scmu frame bracket can be mounted on any diameter tube between 15 to 55mm and it requires no tools for fitting rigorous testing ensures it will withstand the most extreme weather and riding conditions abus 5510c numero comb