10PCS Germany ABEC-9 Bearing 684 618/4 628/4 638/4 4*9*2.5 4*9*3.5 4*9*4 mm ZZ -2Z -2RS Miniature Precision Ball BearingsHome Improvement > Hardware19,49 USD (≈ 17,45 €)19,94 USDDisponibileSold by AliExpress WWVai al negozio