従来型ワイヤーホースクランプ（つまみねじ付き）

Swapped out the worm-gear clamps on my dust collector for these and the airflow difference was noticeable right away. The thumb screw is wide enough to really crank down by hand, no screwdriver needed in those tight spots behind the impeller housing.

The thumb screw means I don't need a driver to tighten these down, which is handy when I'm reaching behind the dust collector. Sealed up the leaky joint on my 4-inch flex hose and the suction difference was noticeable right away.

Swapped out the cheap clamps on my dust collection run for these and the airflow difference was noticeable almost immediately. The thumb screws tighten down hard by hand, no screwdriver needed, which is handy since my flex hose connections are in an awkward spot. No more sawdust leaking at the joint