POWERTEC 70260 4 Inch Key Hose Clamp, Thumb Screw Key Adjustable Stainless Steel Hose Clamps for Dust Collection, Dust Collector and Dryer Vent Hose, Pipe Clamp, RV Clamp, Worm Gear Clamp, 10 pack

These work best when changing that pesky dryer vent. So happy with these, easy to use, no fuss, strong clamp, universal fit. Does come with 2 sizes, I opted for the 4-inch fit and had no problem. These will last forever given the density of material and the thumb protection padding

I just purchased another two package as I have found these a must buy to aid in connecting, removing and reconnecting dust collection hoses to various workshop benchtop equipment. I also purchased the 5-inch size for other sized equipment. Both the sizes are holding up well.

Fit and worked like a champ. Easy turning with thumb, one handed.

I've found these clamps very useful in repairing dryer ducts for customers. They are more accessible for changeouts going forward. Also, by making hand tightening easier, they prevent over-tightening with powered tools.

These are well made and work very well.

These are so easy to use, my only style of clamp I use.

This past summer I installed a barn-wide dust collection system made from different types of 4" pipe. These clamps replace and are used ON ALL joints on that new system. So far, with 5 heavy duty machines a planer, bandsaw, lathe, table saw, and jointer all feeding into a single dust collector..... with on/off valves.... the clamps have all held, have remained in place and tight. I wouldn't use these clamps on something that has a lawn application because of the plastic 'nut.' Other than that, they are super.

Fit and worked.

Great fit for 4" spiral reinforced dust collector duct and key turns easily.

Bom

Bien

Ordered these 3" loop clamps to use on a portable diesel heater air output instead of using screw type hose clamps so I don't have to bring any tools and can attach the hose easily and quickly. I was a bit concerned that the heat from the diesel heater may damage the coating on the clamps but so far they've been holding up perfectly. They clamp securely and don't require a herculean amount of strength to open them which is great. As a bonus in my use case the handles act like an easel to point the air hose at an upward angle in my tent instead of blowing the air straight at the floor.

Simple and sturdy. They work as promised.