cement base glass tube

this list is for ONE tube. the one on the right hand side of picture.

This is , there is NO back end can fill water in.

more friend for kids as the black back end easy to broken. also will be more space and better view.

3 size choose from,

15mm x 150mm

18mm x 180mm

20mm x 200mm

if you buying my B1, B2 farm. B1 is need 15mm x 150mm tube and B2 need 18mm x 180mm tube.