Globe Scientific Test Tube Rack for 12mm and 13mm 90-Place Globe Scientific 456403 Polypropylene Microcentrifuge Tube Rack, 12/13mm Tube, White, 90-Place Polypropylene Dimensions: 246 x 105 x 64mm (6 x 15 Format) Racks are shipped flat for easy storage Easy to assemble: simply fold and snap together securely... MSRP: Now: $20.50 Choose Options Compare