Reviewed by 3 customers
I use these clamps to hold batteries for speedlights on light stands. They clamp on very securely and all of the batteries I have used with a belt clip work perfectly with this clamp. If you can't tell from the pics, there is a little notch in the base that holds a round pole in the middle of the base so it won't rotate or slip once tightened.
This clamp works great and is easy to use but I felt it should have been closer to $10.
This clamp does a great job holding my quantum battery pack to the light stand and it is a quality piece of hardware. But, for the life of me I cannot see why it costs almost [$]--Take my advice and find a cheaper work-around.