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Your cart is empty.An assorted 1lb bag of black solid, 1 Hole, and 2 Hole Rubber stoppers. Includes sizes 1-6. Approx 38 stoppers per bag.
Michelle C. Osborne
Reviewed in the United States on February 4, 2025
The sizes were assorted but every single one had 2 holes.
Jimmy
Reviewed in the United States on March 5, 2023
Good product fast shipping
Mateus
Reviewed in the United States on June 13, 2021
Seemed like a good price but remember you get what you pay for. Holes are tiny and stoppers still have rubber attached showing they were cut out maybe. Quality of made in china?
Hathi
Reviewed in the United States on March 12, 2021
Purchased for a Physics lab at our homeschool co-op. The stoppers fit into standard openings on the glassware which is appreciated. Also were able to be removed fairly easily, which is also a need!Only thing to improve would be if the hole in the stopper was a little larger so a standard science thermometer would better fit in there. Had to add some lubricant to get thermometer in and out.
Paul Aplikowski
Reviewed in the United States on August 23, 2020
They product came as described. The variety and sizes worked for me. Was very disappointed to read the label on the bag that indicated the product "may expose you to benzene and lead". This is nowhere in the Amazon add that indicates what they are made of or what they are appropriate to be used for.I purchased these for home brewing use. I still can't figure out what they are actually made from. The warning on the bag seems to be the California standard warning, but I'd rather not contaminate my wine/beer with an unknown material.
Customer
Reviewed in the United States on August 21, 2020
Excellent product fast shipping VERY HAPPY
Traverse
Reviewed in the United States on April 23, 2020
I used these to find out the size of some bottles, and to use in a home-brew auto-beer-bottling rig. All of the sizes allowed me to figure out just about every bottle size I had, but these things are super stinky, they smell kinda like fresh asphalt.
Kindle Customer
Reviewed in the United States on November 13, 2018
They are what they are, work 👍.
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