Glass ball boiling stones: simple in design, but it is practical for chemical laboratory use, with sufficient quantity, can easily meet your different needs
Clear glass sphere: simple in design, but its practical for laboratory use, with sufficient quantity, can easily meet your different needs
Solid glass ball sphere: smooth surface, high hardness, not easy to deform or break, and useful
Solid glass ball: high grade material, which is to or corrode, sturdy and has service life
Clear glass balls: high hardness, useful and excellent, smooth surface, fine texture, great hand feeling