The Arrow JT21 series light-duty staples to fit JT21/21C staple gun. Box of 1000. Built with the same quality and precision as the T50, these staples utilize a thinner wire in a smaller staple format to deliver great holding power. They are exceptionally easy to fire, making JT21 staples a favorite with crafters and those with limited grip strength. Used for general home repairs, crafting, art projects, and upholstery.