40 Holes Aluminum Test Tube Rack Test Tube Holder Test-tube Stand
We have A,B,C,D four type of test tube racks.
When you purchase orde,please contact us which ones you need. thank you.

Material:Aluminum
Type A:dia.12.5mmx40Holes Suit for 12mm test tube
Type B:dia.15.5mmx40Holes Suit for 15mm test tube
Type C:dia.18.5mmx40Holes Suit for 18mm test tube
Type D:dia.20.5mmx40Holes Suit for 20mm test tube