Review (2/5): Vial part fell off...
Got this because the nicer, wider glass or plastic ones kept breaking off my key chain or cracking, and was hoping this one would last longer. Seemed pretty solid and simple enough design, so I was hopeful. After a week or two I noticed that the only thing left of my key chain was the lid, no idea where the vial ended up! I guess it somehow became unscrewed and fell off somewhere... I guess I'm back on the hunt for a durable oil vial solution!