[RTTY] Ferrites??

[Tom Osborne]

HI All

At a local sale I found some items that look like they are made out of 
some kind of ferrite material.

They are in 2 pieces and if you  take them apart, they look like the 
letter 'E' when you turn them sideways.  They butt together and are held 
in place with a 'U' type clamp.  They kind of remind me of an old 
'flyback' TV transformer core.

Does anyone have any idea what these might be and if they would be any 
good for putting on cables, etc.  Thanks and 73.
Tom W7WHY