Amazon.com: InduSKY 6Pcs 4 inch 5 inch 6 inch Hose Clamp Set 304 Stainless Steel Duct Clamps Worm Gear Adjustable 91-165mm Range Hose Clamp Fuel Line Clamp for Automotive and Mechanical Applications :
6" Industrial Dust Collection Pipe Clamp at Grizzly.com
Everbilt 6 in. Galvanized Steel Worm Gear Clamp MC6HD - The Home Depot
VIVOSUN Stainless Steel Air Ducting Clamps, 4/6/8/12 Inch Adjustable Hose Clamps with Worm Drive for Ducting, Heating, Cooling, Exhaust, and Ventilation (Pack of 2)