• Made from ASTM E-438 Type-1 Class A, Boro 3.3 glass
• With Screw Thread and Teflon Liner
• Leakproof
• Comes with PP Screw Cap


Boro 3.3 or Borosilicate 3.3 is a type of glass having very low coefficient of thermal expansion White Printing Chemical Resistant Screw Cap leak proof