I have had these kind of clamps for so long...this is exactly the same.
I suspect independent manufacturers sell them to the brand manufacturers.
It's the best basic clamp to hold your rods.
The construction means it will wrap around virtually any diameter.
With the curved rod and good placement, you don't even need a more expensive clamp with more versatility.
And with a Z-rod, you can clamp this on your hi-hat and everything you attach to it will come out from under the hihat,
This will even hold electronic drum pads, such as the Alesis DM10's, which are not the lightest of weight.