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.

Well packaged. Very unlikely that could damage during the shipping process. Durability is okay so far I've dropped two one of them just had a clean break which I didn't mind I've had ones that shattered. The other dropped from I would say about 3 and 1/2 ft and just clinked around and no damage. They do get hairline cracks in them but even then still seems to hold up. Overall worth the money.

Great straws

use this product for inhalation with rhymes with wack. with a bit of brillo whis tube always works great. easy to scrape residue and inhale again. prepare for the ringing in your ears

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