About this item Detailed Information: Duct Size: 12 inch; Material: Stainless Steel; Package: 2 pcs/set; Adjustable Range: 254-325 mm/10-12.79 inch Durable Material: Made of high-quality rustproof, waterproof and corrosion-resistant stainless steel, which has long-lasting reliability Powerful & Multifunctional: Provides an excellent seal that fixes hoses tightly in place, effectively solving any liquid or gas leak problems Easy to Use: Just use a screwdriver to loosen or tighten the locking head for the perfect position for your set up Widely Used: 12-inch duct clamps are widely used to secure all manner of duct components like ducting, fans and carbon filters together in grow tents of every shape, size, and make