2pcs 3 Inch Key-Type 304 Stainless Steel Worm Gear Hose Clamps, Adjustable Size Range 60-80mm Clamps for Dryer Vent, Dust Collector and Automotive

These are awesome and easy to contract on the hose tightly by turning the spinner. Excellent strength and build. Very sturdy, not flimsy.

Whoever has tried to tighten a screw-type AC hose clamp with a screwdriver in a tight space will appreciate the ISPINNER key-type clamp—I certainly did. It couldn’t be easier to use; you can tighten it effortlessly by hand with no tools required. A quality product that made my DIY AC and ventilation work much easier. Disclaimer: I am a regular paying customer and did not receive any incentives from the seller or manufacturer.

Did the job attaching my dryer vent to the wall flange. No tools necessary. It is way better than trying to find the slot to tighten in a confined space with a screwdriver.

Easier to turn, but I don’t feel as if it is as secure

Used these for my dryer hose connections. Very easy to use and work very well

The right size for securing the ends of a 3in flexible vent hose . . .

PERFECT FOR MY CLOTHES DRYER HOSE. It is as advertised and worked very nicely on my dryer vents and enabled me to get rid of the horrid rusty spring steel clamps that came with the vent duct. Nice shiny stainless steel with attractive and well molded wingnuts. BUT: I wouldn't even be writing this review if the spec sheet didn't designate this clamp as suitable for automotive use. For auto air or ram ducting - maybe. But I wouldn't personally use them in that sense. The worm gear is loosely fitted in a very thin housing and the plastic wingnut bottoms out on the tension band when sufficient torque is applied. I have not personally tried this product in an automotive setting because I have enough common sense and experience in that area that I wouldn't even try to use this on a 4" vehicle hose clamping application, other than, as mentioned above, on low pressure non-critical ductwork. When you get into automotive pressure applications above 3" diameter, you are usually talking about commercial uses, such as diesel engines, trucks and tractors. It is my OPINION and my OPINION ONLY that these 4" hand-tightened clamps just wouldn't cut it because of the narrow width of the band and the weakness of the tightening mechanism. I also believe the plastic wing nuts would break off if one were to torque the band to proper spec necessary to secure a 4" engine hose. In many 4" hose applications it is doubtful that the small size of the wingnuts would allow you to achieve proper torque before the strength of your hand reaches its limits. So, then some Bozo will show you how it's done using a set of plyers which would definitely snap the plastic wings. Then where will you be? You'll be U.S.C. OPINION and Free advice-for what it's worth.

Easy to use clamps for a dryer hose.

REALLY easy, smooth and work very well. Highly recommend!

Works great. Within minutes I was able to secure the dryer vent. No need for to use anything else. Quick and simple

Great product. Saved me a lot of grief.

I like how easy these are to use

Used this to hold up a dryer hose that fell down. This was working so far and the finger tightening wing makes it much easier to install. Worked perfectly for me, time will tell if it holds on but it seems pretty good and hanging on for about 2months!