In a message dated 96-08-28 21:31:55 EDT, you write: >All that I've ever seen are 15mm clear red. Clear red, yes, but 15mm not necessary. Have seen lots of suck-ins on 12mm reds too. Along with those electrodes that look like they have been hit with battery acid, and are literally falling apart, cut in half with sputtering with the ceramic collar end drifting loose around in the tube. Jeff