[Boatanchors] tube "covers"

[Chris Howard]

I have a box with maybe a couple hundred tube covers, sleeves,
whatever you call those things.  These are almost all shiny metal
with springs inside, push and twist type.  Some say
SOS-3  and SOS-6.  A few are just slip-ons.  (There's
got to be spec's and names for these things, but I
don't know them.)  I estimate they are the size for 
12ax7's and such, some are shorter than that.

Anybody want some?  Free for the postage.