Fulton 4 Inch Thumb Screw Key Adjustable 304 Stainless Steel Hose Clamps, Pipe Clamp, Worm Gear Clamps, Dryer Vent Clamp, Dust Collection, Automotive, RV Clamp 10 pack (4" Hose Clamps)

These are a lot easer to use than the one's without the thumb screw unless you are using a frill with a 1/4 bit to clamp it down. If you want something easy get some of the spring clips that you squeeze and you will never use anything ela=se

Easy clamps, just turn the knobs and watch the clamping power!

Generally a good product. If the clamp needs tightened a lot, yet still within the supposed operating range, the tail protrudes from the lead screw and collides with the thumb screw and becomes more difficult to tighten. Not terrible, just annoying. Once tightened everything is fine.

Using in my shop for my new air filtration system, seal the saw dust in the system of bags. Just what I needed and fit the four inch hose connections.

These clamp tight and are very easy to use.

The attached wing nut is difficult to tighten. A couple of them really were a struggle. The strap itself is a bit flimsy.

Appear to be very good quality. Love the thumb screw...my first time with these. Would recommend these.

I’d give 5 stars but the thumb screw bumps the clamp when you turn it - otherwise they’re pretty nice.