Glass Tubes 12 Piece, Reusable Glass Straws 4 Inch Long, OD 10 mm, Thickness 1.5 mm, Industrial Borosilicate Glass Tubing for Short Cup (10mm-4IN-Clear)

Got them for my kids science class. Teacher reported that not a 1 got broken but she was sure that the kids managed to drop every one of them multiple times so they must be pretty strong. If I understand my kid correctly they used for watering and other plant soil things during the project

perfect OD good intake and MM wall thick for long last..

They are fine for the price may be a bit better

Package arrived quickly in a thick cardboard box. Inside, glass tubes snugged nicely in bubble wrap with zero space for the glass to move around and break. I use these as a guide for flux core welding wire and they are unaffected by heat and don’t break if dropped. Great product and thicker glass than I’ve seen in other brands.

Different material than used to be. Fragile. Splintered. Cracked.

They came all different shapes and thickness I didn't care for these

These glass tubes arrived very well packaged and all of them unbroken. I use them to blow glass and these tubes worked great for that purpose. They take heat well and don’t break and are very strong when I am done. I do believe they are borosilicate and I would highly recommended them.

These borosilicate tubes are the only way to start a serious weekend. They more than were the life of the party,but kept it all guccithroughout the next week or two, including many accidents on pavement and hard counter tops. Took a hitting and kept on ticking.