JT21; 3/8-in Light-Duty Staples (1,000-Count) Flat crown Works with Arrow stapler models: ES21, TT21, TT21K, JT21CM, JT27, & T27 Also works with PowerShot, Easyshot, Easyfire, Craftsman, Ace, Mastercraft, and Stanley staplers Arrow JT21 3/8-in Light-Duty Staples (1,000-Count)