ac infinity stainless steel duct clamps, 8-inch (pack of 2) for ducting, heating, cooling, exhaust, ventilation ac infinity <b>product description</b> <p>this duct clamp is designed to secure various ducting components together. it features a heavy-duty stainless steel (sae grade 316) construction with a worm drive lock. in addition, our clamps must pass a strict quality control process to ensure securing and tightening is smooth, the worm-drive will not get stuck, and will not slip after installation. dual type screw-head enables both phillips or flat-head screwdrivers for adjusting the clamps. each clamp is coated with a rustproof and corrosion-resistant gloss finish. two clamps are included in each pack. </p> <b>applications</b> <p>used to secure and connect various type of duct components together including ducting, carbon filters, inline duct fans, mounting grilles, backdraft dampers, and more.</p>