1/4" / 6mm Steel Staples for the Arrow JT21 stapler; pack 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, women, and those with limited grip strength. Used for general home repairs, crafting, art projects, and upholstery.