Fair-Rite 0431164281 6.3mm 240R Snap-its Cable Core

Fair-Rite Round Snap-on Ferrite Cores - Fair-Rite 0431164281, A snap-fit ferrite core suitable for round cables or bundled wires with diameters up to 6.30mm. Designed to work at lower and broadband frequencies 1 to 300MHz. Fair-Rite 0431164281 6.3mm 240R Snap-its Cable Core

Price: 2.96 from Rapid Online Rapid Electronics Ltd.