Do it No. 4 Heavy-Duty Narrow Crown Staple is a reliable staple designed to fit a wide range of staplers from well-known brands such as Surebonder, Arrow, Black & Decker, Craftsman, Channellock, Duo-Fast, Master Mechanic, Stanley Bostitch, PowerFast, and Unifix. These staples come in various leg lengths including 1/4 inch, 5/16 inch, 3/8 inch, 1/2 inch, and 9/16 inch, all featuring a narrow crown width of approximately 10.7 mm. Each package contains 1,250 staples, conveniently packaged in a box for easy storage and use. Whether you’re working on heavy-duty projects or general stapling tasks, these staples dependable performance and compatibility with numerous stapler models. Model Number: 346753