From: scoot@invalid.net   
      
   I refer to the twist-in types where you reach behind the instrument and   
   twist the thing in and out (if you have small hands and gymnast body).   
   I believed B8.5D was most common type, with a T5 wedge bulb in it.   
   Nowadays it probably has a LED that is not removable.   
   Anyway, I see some catalogues also list "BX8.5D" bulbs that are similar.   
   What is the difference.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)