I made a pair of these and the work great. As you can see I glued pvc ring onto the end caps so that they would stand upright. I then decided to make another pair and ended up finding end caps that were flat on the end so I made a new set of four, so these two are for sale. They do leak ever so slightly, if you fill them with water and roll them back and forth on the counter for a couple of minutes you'll get a few drops. Since I use them in a water bath it's never been an issue. Parts for these come out to about $14 each at my local building supply so how about $20 plus shipping for the pair.

I also have an un-used Mod54 4x5 film processor for sale. I bought this and never used it, sticking with the BTZS tubes. Sorry no pictures. $45 plus shipping.

PM if interested.