These stainless steel clamps prevents water and air leaks on irrigation hoses and small ducting by. No screwdriver needed. Ever. And they will never rust or corrode, making them a great option for underwater. These stainless steel clamps prevents water and air leaks on irrigation hoses and small ducting by. No screwdriver needed. Ever. And they will never rust or corrode, making them a great option for underwater use as well.