Cuscinetto a sfera schermato in metallo sigillato 684W2,5 ZZ 684K 4x9x2,5mm selezionare
Type：684K 684W2.5ZZ. Select Bearing grades：ordinary class，Motor class or Specialty class. Bearing materials mainly include : iron sheets， carbon steel， bearing steel，stainless steel， plastic， ceramics and other new materials.