50-tlg. Ferritringkern-Set, schwarzer Clip-On Ferritkern für Schnüre 20-teilig 3,5 mm,
50 Pcs Ferrite Ring Core Set, Black Clip-on Ferrite Core for Cords 20 Pcs 3.5mm, 10 Pcs 5mm, 10 Pcs 7mm, 5 Pcs 9mm, 5 Pcs 13mm. Function: The Ferrite Core Ring Could be used for reducing electro-magnetic interference and improve intergrity.