Swingline Invision desktop stapler Invision™ Desktop Stapler, Full-Strip, Charcoal Gray Easy-to-read indicator signals when staples are running low. Shows red when staples are running out; changes back to green when loaded. Staples up to 20 sheets. Stores up to four full strips of staples. Rugged metal reinforced base. 2" throat depth. Loads a full strip (210) of 1/4" standard staples. Manufacturer`s limited one-year warranty. All sheet capacities are based on 20-lb. bond.