Unfortunately they are COPPER or COPPER with tin plating.

--
Cy Galley, TC - Chair, Emergency Aircraft Repair, Oshkosh
Editor, EAA Safety Programs
or

Always looking for articles for the Experimenter

"Bob Olds" wrote in message
m...
I think you will find the nico-press sleeves for aircraft are STEEL,not
aluminum.

Bob Olds
Charleston,Arkansas