Features:
The test tube is f ABS plastic with 6 holes. Diameter of four holes is 18mm. Diameter of 2 holes is 13mm.
it is convenient to hold and move. Useful for students. Perfect for teaching use at school.
Material: ABS Plastic. Size: 16x4.9x5cm/6.30x1.93x1.97".
Economical and space-saving test tube rack for student use or applications in lab or at home.
Easy to disassemble and install, convenient to carry. and long service life, easy to clean.