These duct clamps are constructed from 304 stainless steel, offering resistance to rust, water, and corrosion. The material provides strength and durability for long-term use in various conditions. The clamps feature an open inner and outer ring structure with bolted fastening. This design allows for a secure hold while maintaining a smooth surface that resists torsion and pressure. The adjustment range is broad, enabling a tight lock on different hose sizes. When used with a variety of hose materials, these clamps create a dependable seal that helps reduce the risk of liquid or gas leakage. The worm drive mechanism enables easy adjustment with a screwdriver. To install, place the clamp around the hose and fitting, then turn the screw to tighten or loosen as needed. These clamps are suitable for securing hoses, pipes, cables, and tubes in automotive, industrial, marine, and household applications. They work well with rubber, silicone, PVC, and other common hose materials. The open structure allows for visual inspection and simple cleaning. The set includes 4 clamps, each reusable by loosening the screw. The smooth interior surface helps protect the hose from damage during tightening. The stainless steel construction also resists moisture, salt spray, and mild chemicals. The bolted fastening applies even pressure around the circumference, reducing concentrated stress points. The torsion-resistant design helps the clamp maintain its shape under twisting forces.