[TowerTalk] Unknown antenna traps

[r miles]

I found two blue/green traps in  one of my  old  parts boxes. Size is 
total length 8.25''. coil size is 6'' long  X  1.5'' diameter.  Ends 
have 1'' aluminium stubs. One end is .5'' OD & the other end is .75'' 
OD.  With a hole  drilled thru each stub. Coil is covered in molded 
blue/green  plastic or PVC.  Weight is .75 lbs. each. On one end in the 
molded  cover it says 40. I believe  the color is the old HyGain  color.
First I thought these were  traps  for a 40m dipole. But now I think 
they  might have been for an extension of a HyGain  tribander driven 
element to add a rotatable dipole on 40m to  a HyGain  tribander.
Anyone  remember them or know their useage. I can  take a photo if 
anyone  is interested.

K9IL