Hollow Stopper, Hexagonal Top - 29/32 Cone - Flat Bottom - Borosilicate Glass - Eisco Labs

• Hollow stopper made of high quality, heavy duty 3.3 borosilicate glass
• Hexagonal top, flat bottom
• 29/32 cone size
• 1.25" top width, 2.25" total length
• Perfect for any science or home laboratory

Hollow stopper made of high quality, 3.3 borosilicate glass. Stopper features a hexagonal shape top, and a flat bottom. 29/32 cone size.

Stopper measures 2.25" long, and top measures 1.25" wide.

Eisco Labs Borosilicate glass has the following heat tolerances: Strain Point -515°C | Annealing Point 565°C | Softening Point 820°C.