This polyethylene rack will hold six test tubes, and has six drying pins. Sides are fully open for clear viewing. Rack has six 25mm holes and requires assembly. Additional Info: Plastic Test Tube Rack, In-Line Package Size(L x W x H): 9.5 X 3 X 1 (IN) Categories: Racks, Test Tube HTS Code: 3926.90.9910 UNSPSC: 4.11228e+007 Country Of Origin: INDIA