POP-UP Tube Rack Collapse for compact storage and pop-up for quick use. Made from polypropylene Easy to open - easy to close Designed to help organize 15 and 50 mL tubes Imprinted grid aids quick retrieval Stack racks in open or closed position Saves space when racks are not in use Not recommended for cleaning in autoclave Tubes: 15 & 50 mL Wells: 21 / 12 Well Dia.: 17 / 30 mm L x W x H: Expanded: 25.5 x 13.7 x 7.2 cm Collapsed: 25.5 x 13.7 x 2.1 cm Pkg.: 2/pk Color: Blue