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.

Great product that handles heat very well!

The 6 piece Borosilicate Glass Tube were and exactly as the description stated and as the positive customer reviews commented. They are heat resistant, not shattering or cracking when put in a microwave oven and are great for using as a straw in ice cold smoothies, slushies and other cold beverages. They are very securely packaged and well priced.

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.

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