20ea Inner 7mm 0.28''Clip Filter ferrite Bead clamp EMI RF Choke ferrite Ring for Audio/Video Cable or Power Cord Black Go to amazon.com Related posts 10 best 7 0.28 for 2022 Featurewidely work on the digital or power cable DescriptionNiZn 100MHz 80ohm ,same to ZACT1730-0730