Do it No. 4 Heavy-Duty Narrow Crown Staple is a reliable staple designed to fit a wide range of staplers from popular 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 an approximate crown width of 10.7 mm. Each box contains 1,250 heavy-duty staples, making them for both professional and DIY projects that require durable and consistent fastening. Whether you need to replace staples for your existing stapler or stock up for future use, these staples provide dependable performance and compatibility across multiple models. Model Number: 346753