FoldTier 6 Pcs Borosilicate Glass Tube 12mm OD 2mm Thick Glass Blowing Tubes with Cleaning Brush (Clear,4 Inch)

Superior thermal shock resistance. This borosilicate glass tube is a critical component in my high-temperature chemical processing manifold. It exhibits remarkable thermal stability under rapid temperature cycling, maintaining structural integrity without stress fracturing. The optical clarity remains pristine even after repeated exposure to harsh reagents. Precisely dimensioned and exceptionally durable.

They do not break easily and none were broken when they came in. They were a little thin but it hasn't been a problem for me. Don't let the black spots build up because it will cause cracks and catch fire while you are using them.

Very thick, great quality! I use these as a stem for soap dispensers to minimize the amount of plastic coming into contact with our product products.

I ordered a 5-pack of clear 4 inch glass tubes and was very happy with the product. The price was excellent for the value. They are thick, durable, and good quality. The cleaning brush/tool that was included is not very strong/long/affective, but it was a nice touch and would be excellent if it was made for the length and width of the tubes I was purchasing.

Smaller that expected

Perfect length

Good

Glass tubes serve their purpose but delivery was promised previous night and was not received until following moring Very upset recently with delivery times not being correct

Für Vaporizer 2con passen sehr gut. Hitzebeständige borosilikatglasrohr.