SS28B2035 - 

Very High Impedance Multi-Turn Sleeve Snap with Serpentine Cable Threading Capability
By increasing the number of times the circuit passes through the ferrite core, the effective magnetic path is lengthened yielding a significant increase in impedance. The gain is equal to N2, the square of the number of turns, and depending on the circuit cable load and frequencies involved, much of the increase can be realized. Cables may be “looped back through” or “looped over the top”. In an alternate configuration, separate cable circuits can be accommodated without saturation. Three styles permit different approaches: The 1-hole allows two passes of a cable with a diameter up to 0.365" (9.3 mm) or three passes of a cable with a diameter up to 0.24"” (6.2 mm). The 2-hole allows two passes of a cable with a diameter up to 0.335" (8.5 mm). The 3-hole allows three passes of cable with a diameter up to 0.203" (5.8 mm). Each is available with an optional adhesive foam pad mounting base.