Polypropylene racks with a 3-tier design provide a clear view of the tube contents and convenient insertion and removal of tubes. Additional Info: Plastic Test Tube Racks, 3-Tier, 18mm X 12 Tubes, Pack Of 4 Package Size(L x W x H): 13.5 X 8 X 3 (IN) Categories: Racks, Test Tube HTS Code: 3926.90.9910 UNSPSC: 4.11228e+007 Country Of Origin: INDIA