Ideal Corp. 5Y064V 2-Pack Turn-Key Dryer Vent Clamp
The IDEAL Turn Key hose clamp innovative design installs with a simple hand twist, no tools required and holds standard installation torque of 30   35 in./lb. It's easy to remove and replace for easy dryer vent hose clean out and replacement. Just pull off the screw cap for a tamper resistant connection. Clamping range: 2 1/2'' to 4 1/2''. 2 pack dryer vent carded clamps.