Dirty Electricity Filters Mix 75 Store/Ferrite Core Products/Mix 75Ring - Mix 75 RFI Range: 150 Khz-10 MHzRing - Mix 75 RFI Range: 150 Khz-10 MHzSnap On - Mix 75 - RFI Range 150 KHz-10 MHzSnap On - Mix 75 - RFI Range 150 KHz-10 MHzSlip On - Mix 75 - RFI Range 150 KHz-10 MHzSlip On - Mix 75 - RFI Range 150 KHz-10 MHz