Review (4/5): Not heavy duty glass
These two spray bottles are fairly decent for light to medium usage. They are glass, but not thick and hefty as you might expect. They feel like plastic even though they aren't. If dropped, these things are going to shatter. The internal spray tubes are plenty long enough to reach every bit of liquid in the bottle and wide enough to pull up good amounts of fluid. There's no excessive spraying because the amount discharged is so little. We've not had any trouble with the nozzles (going from on to off, clogging up, shooting the liquid off at a weird angle, etc). I don't recommend these for heavy duty work or for use in an area where they are likely to be knocked off to the floor.