Heavy Duty Compatibility: These 23/13-H stapler pins are compatible with heavy-duty staplers and measure 13 mm (1/2 inches) in length. Stainless Steel Construction: Crafted from durable stainless steel, these pins offer long-lasting performance and resistance to corrosion. Versatile Usage: Suitable for various heavy-duty stapling tasks, such as binding documents, securing packaging materials, or fastening upholstery. Efficient Stapling: The flat bar design ensures smooth and efficient stapling, reducing jamming and minimising effort required.