The key handle feature of these clamps allow them to be finger tightened without the need for a screwdriver or wrench. The narrow metal band of the clamp allows it to drop into the spiral of the hose better than average clamps from your hardware store. You will find these very handy in your dust collection setup.
Tech Tip: Rub the back of the band on the impressed threads with a bar of paraffin wax or hard hand soap. It adds dry lubricity to the thread and makes it easier to attain the tightness you need with your fingers.