Premium materials: Made of stainless steel and ABS, durable and stable for long-lasting use. Widely used for sealing plastic bags, sausages, mesh bags, and more. Large capacity track: U-shaped design with gravity hammer, compatible with buckle models 502, 503, 506, and 508. 506 is most common for versatile applications. Adjustable sealing thickness: Stop screw allows easy control of staple tightness for different thicknesses. Upper and lower molds ensure stable automatic nail feeding. User-friendly design: Simple operation suitable for both beginners and experienced users. Quick and efficient sealing process. Wide application: Ideal for supermarkets, bakeries, beverage stores, condiment factories, food freezing factories, and meat processing plants. Seals plastic bags, sausages, fruits, vegetables, and food bags.