Fair-Rite 0475164281 Ferrite Clamp On bead, 75 material, suitable for clamping over cables up to 6.3mm diameter for RF suppression between 0.5 and 20MHz.  These are very effective at suppressing common mode noise If the cable to be suppressed can be wound through the core a number of times.  Also ideal for use on IEC power cables to suppress noise birdies in the Low HF bands from computer display monitors and switching powersupplies.

Fair-rite PN# 0475164281,  39.5mm L x 20mm W, 20mm H, ( inside diameter 6.3mm ) For more information see the Fair-rite 0475164281 Data Sheet

We can generally supply these in higher quantities than stocked in around 1 weeks POA