The iPower Stainless Steel Duct Hose Clamps are designed for use with 3/4 to 12 inch duct hoses in hydroponic systems. Made of durable stainless steel, these silver clamps are perfect for securing and sealing ducting to ensure smooth airflow and efficient ventilation. The 2 pack offers convenience and flexibility for various projects, providing a secure and reliable solution for managing your ducting system.