Borosilicate Glass Tube Vials 1, 6ml glass vial,the outer diameter of the vials is 22mm, the height of the vials is 40mm ;Other sizes can also be customized. 2, Glass color is clear or amber. 3, Glass material: clear glass material ,we have 5.0 neutral borosilicate glass, 7.0 low borosilicate glass and 3.3 high borosilicate glass; amber glass material ,we have 5.0