Specification: Material: Plastic Aperture Diameter: 12mm, 17mm Length: 15.5cm Height: 5cm Color: Red Type: 2 holes for 12mm tube, 4 holes for 17mm tube
Features: - Test tube rack, is the most basic chemistry experiment instrument. - Plastic tube material stability, durable. - The tubes can be placed in a test tube rack, an experiment to observe the phenomenon. - It can also be used as containers for the pen, and used for placing cutlery spoon.