Create as large a rack as you need by linking together multiple racks. Heavy-duty polypropylene racks feature a unique system of tabs and slots, which facilitate easy connection and sturdy fit. Each rack can hold four 50 mL conical tubes, twelve 15 mL conical tubes, thirty-two 1.5 mL microtubes, or thirty-two 0.5 mL microtubes. Autoclavable. Assorted colors: blue, green, pink, yellow, and orange. Rack measures 174 x 95 x 52 mm. Pack of 5.