The galvanized Rapid Super Strong 9/10 staples in a box of 5000 units are designed to precisely pierce and fasten thick stacks of paper between 40 and 70 sheets. The reinforced galvanized steel structure prevents corrosion and ensures a perfect closure of the 10 mm legs on the back of the document. They are compatible with Rapid's high-capacity staplers, making them a reliable choice for filing legal documents, technical manuals, and accounting files.