20 PCS 4 ML (1 dram) Clear Small Liquid Sample Glass Vials with Screw Caps, 15 mm Diameter x 45 mm Length Leak-Proof Vial, 13-425 Black Screw Cap with PE Liners

I buy these a lot. For work, science. I also buy a box for my 3 year old. She collects sand in hers! Good size, functionality, no leakage ever, and a three year old hasn't broken one yet, so I'd say excellent durability.

I recently had to deliver a fecal sample from my cat’s litter box to the vet for parasite detection. They are the perfect size for samples. Not too small and not too big. They are also sturdy enough for that. A small sample an inch long and a 1/4 inch in diameter will fit nicely in here. I’m not sure but it is probably too small for a urine sample.

These little bottles (vials) are made well. The price is reasonable. These can be used for liquids, or for holding very small items.

Perfect!

These one-dram vials are perfect for distributing blessed liquids to younger members of my family who are just now getting in touch with their Christian heritage. It continues to encourage their search without overwhelming their personal efforts.

These were great to hold perfume for traveling. Aerosol perfumes often don’t work well after flights. I sprayed them into the bottle and the perfume now fits easily into my Ziploc bag without any leaks.

As advertised. These are sturdy glass vials.

Excellent for my DY Eye projects. I put oil sent in those.