just got in 2 dram worx GLASS hoppers for my hornady powder measures.
the original plastic one on the left was new 6 months ago.....next to the new one made of heavy pyrex glass.
more than 1/8" thick and it holds a little more powder than the plastic.
it has a screw in base attached to the glass with a baffle permanently attached inside the base,
it also has a tight fitting aluminum cap with a "O" ring seal to keep moisture out.
i love it! ....now i can see if powder is low!