POWERTEC 70332 3 Inch Key Hose Clamp, Thumb Screw Key Adjustable Stainless Steel Hose Clamps for Dust Collection and Dryer Vent Hose, 5 Pack

Good size and function. Easy to tighten and loosen

These things are sweet! Bought them fir our diesel tent heater. Nice not needing a screwdriver to secure the ducting because if you're anything like me the screwdriver is always watching from the house as you leave for the trip. These simply setup greatly.

Purchased these thinking I was getting a "deal" because of the price; however, you're better off paying the slight premium and getting the original Camco Twist-IT Hose Clamp. They're WAY better quality overall, I returned these and picked those up instead.

Good clamp that is easy to turn and required no tools. It was somewhat hard to get it started so I dropped 1 star but they do work well and hold well and are easy to turn by hand

Already done a review for these. Am still very impressed with the way these clamps hold my ventilation and dust collection system together. They don't appear robust.... BUT THEY ARE!!!!