Starter set expands virtually without limits in 10-sleeve increments with extension module Durable 5698 (sold separately). Two viewing angles, 30° and 60°. Weighted desk stand with non-slip rubber feet. Glare-free, polypropylene sleeves with rugged frames. Includes desk stand, 10 sleeves and 10 snap-on tabs.Package Includes: Desk Stand; (10) Sleeves; (10) Snap-On Tabs