A Cralusso rubber stopper oflegendary quality, which has become the favorite of fine-equipment,predatory, and carp anglers. No wonder, why it is so popular: the outstanding quality rubber can be fastened to the 0.10 mmthick fishing linejust as perfectly as to an 0.30 mm thick line.Easy-to-use:thread the fishing line through the metal lug and pull the stopper on the line.