[Premium Copper-Coated Steel] Copper plating surface treatment for smoother and more durable performance
[Compatible Carton Stapler] Compatible with our HB3518 and other brands' 1-3/8 inch crown manual or pneumatic cardboard box closing staplers
[Ideal for carton box closing] The pointed design easily penetrates up to 5 layers of thick cardboard, making it ideal for various cardboard box packaging tasks