Jackson Brothers
General Electronics
Suplus Bargains
2944666661 6 hole ferrite core made by Fair-Rite
Amidon Ferrite Rings in various Mixes 43-61 etc
From £0.38
Ceramic Insulating bead Pack of 25 H209
£3.00
FB-43-501 ferrite Shield bead pack of ten
£1.50
Ferrite Bead 2643000301 20pcs per sale
£2.40