iPower 4 Inch Key Hose Vent Clamp for Ducting Connection, 5 PCS Go to amazon.com Related posts Top 10 best ducting clamps 2022 Feature5 Pieces per packMade from stainless steelClamping Range: 2-Inch to 3.25InchAllow for tool-less adjustmentsDurable and corrosion resistant DescriptionOur 4-Inch stainless steel Key Hose Clamps hand tighten for a leak-proof seal, even in tight spaces. No tools required. 5-Pack.