Fully Adjustable - Tube racks may be viewed an any angle between 0° and 35°. Universal - Fits most tube racks up to 5.0” high and 8.50” wide Easy-To-Use - Simply find a comfortable angle and secure platform by tightening thumb screws. Durable - Constructed from robust 3/8” thick acrylic. Efficient - Fix stand at 0° angle to store lower profile tube racks, such as the 80-well rack pictured, by placing them above and below platform.