Laboratory Tube Rack

A thousands of tube Racks are sold every second in the world but if I have to use 15 mL Falcon tubes, 50mL Falcon tubes, 1.5 mL eppendorf tube and cryogenic tubes I have two options:

1. Load the hood with different racks.
2. Design and 3D print my own one like I did !!!!

no need to glue anything, just push the components ;-)