33 COE Borobars Elephant Gray

Origin Borobars are made by dry pressing glass powder into a bar shape and then melting it into a solid form.

Origin Borobars Glass Specifications:
- COE: 33
- Softening Point: 820° C / 1508° F
- Annealing Point: 560° C / 1040° F
- Approximate Bar size: 3.5" L x 0.25" W x 0.25" H