Product Information
- 8 Inches Long / 8mm OD / 5mm ID / 1.5mm thickness
- 12 pieces in total: 2 piece black, 2 piece gray, 2 Piece blue, 2 Piece green, 2 Piece yellow, 2 Piece clear
- Made of borosilicate glass, high temperature resistant and unbreakable, surface and both ends very smooth
- Mainly used for science experiments and DIY, they are also good gifts