-19% 1/5/10/50 pz Nitruro di Silicio Si3N4 Sfere Cuscinetto In Ceramica G5 Diametro 0.8/1/1.2/1.5/1.588/2/2.381/2.5/2.778/3/3.175/3.5/4/4.5 - 16.1mm