NINDEJIN 5/10pcs worm gear hose clamp adjustable 6-63mm key clamp hose clip for water pipe dryer vent clamp - AliExpress
IDEAL-TRIDON 2-Pack 2-5/8-in to 4-1/2-in dia Stainless Steel Adjustable Clamp in the Pipe Support & Clamps department at Lowes.com
Flexible dryer vent hose, attaching/detaching from wall vent by turning screw in steel duct clamp. Fleece Blanket by Duct Care Services - Fine Art America