3 1/2" Round Flat Borosilicate Glass 1/4" thick
Borosilicate glass is a very clear glass. It does not have the green tint like soda lime glass. Borosilicate glass is heat-resistant. It can be used very close to a light bulb without breaking. The heat generated by 3D Printer will not crack this glass. Laboratories can use borosilicate glass for many different lab tests involving heat.
Seconds means that the glass has scratches on the surface and chips around the edge.
Seconds (2nds) cannot be returned or refunded because they are being sold at a discounted price.
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