Glass tubes 12 Piece, 8 Inch Long Borosilicate Glass Tubes OD 8 mm Thickness 1.5 mm Colorful Industrial Glass Tubing for Tall Cup (8mm / Multiple Colors)

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 Glass Tubing for tall cup (goblet cups with a height exceeding 150cm)