Surebonder 55012 Heavy Duty 1/4-Inch length staples, Arrow T50 type, 1,250/box, 5 boxes. Surebonder staples will meet all of your stapling needs. These staples are designed for use with Surebonder staple guns such as the 5625 TRIGGERFIRE and many of the other top name-brand staple guns including the Arrow T50.